alkavan · August 29, 2023 11:23 · Dec 15, 2013 · May 11, 2013 · May 11, 2013 · May 11, 2013
diff --git a/linux_console_commands.sh b/linux_console_commands.sh
@@ -4,6 +4,14 @@
 # source: http://www.pixelbeat.org/cmdline.html
 # Enjoy!
 
+# How to run process as background and never die
+#
+# nohup means: Do not terminate this process even when the stty is cut off.
+# > /dev/null means: stdout goes to /dev/null (which is a dummy device that does not record any output).
+# 2>&1 means: stderr also goes to the stdout (which is already redirected to /dev/null).
+# & at the end means: run this command as a background task.
+nohup node server.js > /dev/null 2>&1 &
+
 ------------------------------------------------------------------------------------
 # To recursively give directories read&execute privileges:
 find /path/to/base/dir -type d -exec chmod 755 {} +

diff --git a/linux_console_commands.sh b/linux_console_commands.sh
@@ -1,8 +1,3 @@
-# git commands
-
-# remove all deleted files from staging area
-git diff --diff-filter=D --name-only -z | xargs -0 git rm
-
 # I book marked some sites with useful Linux commands i found.
 # then i noticed they were down, so i loaded them via google cache, and copied here.
 # source: http://blog.urfix.com/

diff --git a/linux_commands.sh → linux_console_commands.sh b/linux_commands.sh → linux_console_commands.sh
diff --git a/linux_commands.sh b/linux_commands.sh
@@ -29,7 +29,7 @@ du -h --max-depth=1
 # Synchronize current directory with remote one
 rsync -auz -e ssh remote:/dir/ . && rsync -auz -e ssh . remote:/dir/
 # OR
-rsync -avh --stats --progress package/ nelsond@s.edufiles.org:/home/user/public_html/project/package
+rsync -avh --stats --progress package/ user@s.host.net:/home/user/public_html/project/package
 
 ------------------------------------------------------------------------------------
 # Mirror web site

diff --git a/linux_commands.sh b/linux_commands.sh
@@ -29,7 +29,7 @@ du -h --max-depth=1
 # Synchronize current directory with remote one
 rsync -auz -e ssh remote:/dir/ . && rsync -auz -e ssh . remote:/dir/
 # OR
-rsync -avh --stats --progress package/ [email protected]:/var/www/ugi.igal/package
+rsync -avh --stats --progress package/ [email protected]:/home/user/public_html/project/package
 
 ------------------------------------------------------------------------------------
 # Mirror web site

diff --git a/linux_commands.txt → linux_commands.sh b/linux_commands.txt → linux_commands.sh
@@ -11,126 +11,134 @@ git diff --diff-filter=D --name-only -z | xargs -0 git rm
 
 ------------------------------------------------------------------------------------
 # To recursively give directories read&execute privileges:
-
 find /path/to/base/dir -type d -exec chmod 755 {} +
+
 ------------------------------------------------------------------------------------
 # To recursively give files read privileges:
-
 find /path/to/base/dir -type f -exec chmod 644 {} +
+
 ------------------------------------------------------------------------------------
 # chmod only files in current dir
-
 find . -type f -print0 | xargs -0 chmod 660
+
 ------------------------------------------------------------------------------------
 # List the size (in human readable form) of all sub folders from the current location
-
 du -h --max-depth=1
+
 ------------------------------------------------------------------------------------
+# Synchronize current directory with remote one
 rsync -auz -e ssh remote:/dir/ . && rsync -auz -e ssh . remote:/dir/
+# OR
+rsync -avh --stats --progress package/ [email protected]:/var/www/ugi.igal/package
 
-# Synchronize current directory with remote one
 ------------------------------------------------------------------------------------
+# Mirror web site
 wget -mk -nv http://yoursite.com
 
-# Mirror web site
 ------------------------------------------------------------------------------------
+# Mirror web site (using compression and encryption)
 rsync -az -e ssh --delete ~/public_html/ remote.com:'~/public_html'
 
-# Mirror web site (using compression and encryption)
 ------------------------------------------------------------------------------------
+# Encrypt file
 gpg -c file
 
-# Encrypt file
 ------------------------------------------------------------------------------------
+# Decrypt file
 gpg file.gpg
 
-# Decrypt file
 ------------------------------------------------------------------------------------
+# Find and highlight results
 find /etc/httpd | grep --color "filename"
 
-# Find and highlight results
 ------------------------------------------------------------------------------------
+# Find files not readable by all (useful for web site)
 find -type f ! -perm -444
 
-# Find files not readable by all (useful for web site)
 ------------------------------------------------------------------------------------
-pv access.log | gzip > access.log.gz
-
 # Monitor progress of a command
 # Pipe viewer is a terminal-based tool for monitoring the progress of data through a pipeline.
 # It can be inserted into any normal pipeline between two processes to give a visual indication
 # of how quickly data is passing through, how long it has taken, how near to completion it is,
 # and an estimate of how long it will be until completion.
 # Source: http://www.catonmat.net/blog/unix-utilities-pipe-viewer/
+
+pv access.log | gzip > access.log.gz
+
 ------------------------------------------------------------------------------------
+# Prints a graphical directory tree from your current directory
 ls -R | grep ":$" | sed -e 's/:$//' -e 's/[^-][^\/]*\//--/g' -e 's/^/   /' -e 's/-/|/'
 
-# Prints a graphical directory tree from your current directory
 ------------------------------------------------------------------------------------
+# Deletes all files in a folder that are NOT *.foo, *.bar or *.baz files. Edit the pattern inside the brackets as you like.
 rm !(*.foo|*.bar|*.baz)
 
-# Deletes all files in a folder that are NOT *.foo, *.bar or *.baz files. Edit the pattern inside the brackets as you like.
 ------------------------------------------------------------------------------------
+# Intercept stdout/stderr of another process
 strace -ff -e trace=write -e write=1,2 -p SOME_PID
 
-# Intercept stdout/stderr of another process
 ------------------------------------------------------------------------------------
-awk '!x[$0]++' <file>
-
 # Remove duplicate entries in a file without sorting.
 # Using awk, find duplicates in a file without sorting, which reorders the contents.
 # awk will not reorder them, and still find and remove duplicates which you can then redirect into another file.
-------------------------------------------------------------------------------------
-ffmpeg -f x11grab -r 25 -s 800x600 -i :0.0 /tmp/outputFile.mpg
 
+awk '!x[$0]++' <file>
+
+------------------------------------------------------------------------------------
 # Record a screencast and convert it to an mpeg
 # Grab X11 input and create an MPEG at 25 fps with the resolution 800×600
+
+ffmpeg -f x11grab -r 25 -s 800x600 -i :0.0 /tmp/outputFile.mpg
+
 ------------------------------------------------------------------------------------
+# Same, but in good quality, h264
 ffmpeg -f x11grab -r 30 -s 1680x1050 -i :0.0 -vcodec libx264 -vpre hq -threads 0 -mbd rd -flags mv0 -trellis 2 -cmp 2 -subcmp 2 -g 300 -pass 1/2 -b 4000k /tmp/outputFile.mp4
 
-# Same, but in good quality, h264
 ------------------------------------------------------------------------------------
-mount /path/to/file.iso /mnt/cdrom -oloop
-
 # Mount a .iso file in UNIX/Linux
 # -o loop lets you use a file as a block device
-------------------------------------------------------------------------------------
-date -d@1234567890
 
+mount /path/to/file.iso /mnt/cdrom -oloop
+
+------------------------------------------------------------------------------------
 # Convert seconds to human-readable format
 # This example, for example, produces the output, “Fri Feb 13 15:26:30 EST 2009″
-------------------------------------------------------------------------------------
-^Z $bg $disown
 
+date -d@1234567890
+
+------------------------------------------------------------------------------------
 # Job Control
 # You’re running a script, command, whatever.. You don’t expect it to take long, now 5pm has rolled around and you’re ready to go home...
 # Wait, it’s still running! You forgot to nohup it before running it..
 # Suspend it, send it to the background, then disown it...
 # The output wont go anywhere, but at least the command will still run...
+
+^Z $bg $disown
+
 ------------------------------------------------------------------------------------
+# Edit a file on a remote host using vim
 vim scp://username@host//path/to/somefile
 
-# Edit a file on a remote host using vim
 ------------------------------------------------------------------------------------
-watch -n 1 mysqladmin --user=<user> --password=<password> processlist
-
 # Monitor the queries being run by MySQL
 # Watch is a very useful command for periodically running another command –
 # in this using mysqladmin to display the processlist.
 # This is useful for monitoring which queries are causing your server to clog up.
 # More info here: http://codeinthehole.com/archives/2-Monitoring-MySQL-processes.html
-------------------------------------------------------------------------------------
-\[command]
 
+watch -n 1 mysqladmin --user=<user> --password=<password> processlist
+
+------------------------------------------------------------------------------------
 # Escape any command aliases
 # e.g. if rm is aliased for ‘rm -i’, you can escape the alias by prepending a backslash:
+
+\[command]
+
 ------------------------------------------------------------------------------------
+# Show apps that use internet connection at the moment. (Multi-Language)
 ss -p
 
-# Show apps that use internet connection at the moment. (Multi-Language)
 ------------------------------------------------------------------------------------
-notify-send ["<title>"] "<body>"
-
 # Send pop-up notifications on Gnome
 # The title is optional.
 # 
@@ -140,50 +148,55 @@ notify-send ["<title>"] "<body>"
 # On Debian-based systems you may need to install the ‘libnotify-bin’ package.
 # Useful to advise when a wget download or a simulation ends. Example:
 # wget URL ; notify-send "Done"
+
+notify-send ["<title>"] "<body>"
+
 ------------------------------------------------------------------------------------
+# Quickly rename a file
 mv filename.{old,new}
 
-# Quickly rename a file
 ------------------------------------------------------------------------------------
+# Quickly backup or copy a file with bash
 cp filename{,.bak}
 
-# Quickly backup or copy a file with bash
 ------------------------------------------------------------------------------------
+# Remove all but one specific file
 rm -f !(survivior.txt)
 
-# Remove all but one specific file
 ------------------------------------------------------------------------------------
-strings /dev/urandom | grep -o '[[:alnum:]]' | head -n 30 | tr -d '\n'; echo
-
 # Generate a random password 30 characters long
 # Find random strings within /dev/urandom.
 # Using grep filter to just Alphanumeric characters, and then print the first 30 and remove all the line feeds.
-------------------------------------------------------------------------------------
-echo "rm -rf /unwanted-but-large/folder" | batch
 
+strings /dev/urandom | grep -o '[[:alnum:]]' | head -n 30 | tr -d '\n'; echo
+
+------------------------------------------------------------------------------------
 # Run a command only when load average is below a certain threshold
 # Good for one off jobs that you want to run at a quiet time.
 # The default threshold is a load average of 0.8 but this can be set using atrun.
+
+echo "rm -rf /unwanted-but-large/folder" | batch
+
 ------------------------------------------------------------------------------------
+# <MISSING DESCRIPTION>
 watch -n 1 'echo "obase=2;`date +%s`" | bc'
 
-# Create a binary clock.
 ------------------------------------------------------------------------------------
-dd if=/dev/zero of=/dev/null bs=1M count=32768
-
 # Processor / memory bandwidthd? in GB/s
 # Read 32GB zero’s and throw them away.
+
+dd if=/dev/zero of=/dev/null bs=1M count=32768
+
 ------------------------------------------------------------------------------------
+# Backup all MySQL Databases to individual files
+
 for I in $(mysql -e 'show databases' -s --skip-column-names); do mysqldump $I | gzip > "$I.sql.gz"; done
 
-# Backup all MySQL Databases to individual files
 ------------------------------------------------------------------------------------
+# Like top, but for files
 watch -d -n 2 ‘df; ls -FlAt;’
 
-# Like top, but for files
 ------------------------------------------------------------------------------------
-wget –random-wait -r -p -e robots=off -U mozilla http://www.example.com
-
 # Download an entire website
 # -p parameter tells wget to include all files, including images.
 # -e robots=off you don’t want wget to obey by the robots.txt file
@@ -193,47 +206,52 @@ wget –random-wait -r -p -e robots=off -U mozilla http://www.example.com
 # –limit-rate=20k limits the rate at which it downloads files.
 # -b continues wget after logging out.
 # -o $HOME/wget_log.txt logs the output
-------------------------------------------------------------------------------------
-time read
-time read -sn1 
 
+wget –random-wait -r -p -e robots=off -U mozilla http://www.example.com
+
+------------------------------------------------------------------------------------
 # A very simple and useful stopwatch, <ctrl> + <d> to stop
 # s:silent, n:number of characters.
+
+time read
+time read -sn1
+
 ------------------------------------------------------------------------------------
+# Quick access to the ASCII table.
 man ascii
 
-# Quick access to the ASCII table.
 ------------------------------------------------------------------------------------
-net rpc shutdown -I ipAddressOfWindowsPC -U username%password
-
 # Shutdown a Windows machine from Linux
 # This will issue a shutdown command to the Windows machine.
 # username must be an administrator on the Windows machine.
 # Requires samba-common package installed.
+
+net rpc shutdown -I ipAddressOfWindowsPC -U username%password
+
 ------------------------------------------------------------------------------------
+# Reboot the Windows machine
 net rpc shutdown -r
 
-# Reboot the Windows machine
 ------------------------------------------------------------------------------------
+# Abort shut down of the Windows machine
 net rpc abortshutdown
 
-# Abort shut down of the Windows machine
 ------------------------------------------------------------------------------------
+# Jump to a directory, execute a command and jump back to current directory.
 (cd /tmp && ls)
 
-# Jump to a directory, execute a command and jump back to current directory.
 ------------------------------------------------------------------------------------
-ps aux | sort -nk +4 | tail
-
 # Display the top ten running processes – sorted by memory usage
 # ps returns all running processes which are then sorted by the 4th field in numerical order and the top 10 are sent to STDOUT.
+
+ps aux | sort -nk +4 | tail
+
 ------------------------------------------------------------------------------------
+# List of commands you use most often
+
 history | awk ‘{a[$2]++}END{for(i in a){print a[i] ” ” i}}’ | sort -rn | head
 
-# List of commands you use most often
 ------------------------------------------------------------------------------------
-<alt> + <print screen/sys rq> + <R> – <S> – <E> – <I> – <U> – <B>
-
 # Reboot machine when everything is hanging (raising a skinny elephant)
 # If the machine is hanging and the only help would be the power button,
 # this key-combination will help to reboot your machine (more or less) gracefully.
@@ -245,193 +263,223 @@ history | awk ‘{a[$2]++}END{for(i in a){print a[i] ” ” i}}’ | sort -rn |
 # B – reboots the system
 # Save your file before trying this out, this will reboot your machine without warning!
 # http://en.wikipedia.org/wiki/Magic_SysRq_key
-------------------------------------------------------------------------------------
-less +F somelogfile
 
+<alt> + <print screen/sys rq> + <R> – <S> – <E> – <I> – <U> – <B>
+
+------------------------------------------------------------------------------------
 # Make ‘less’ behave like ‘tail -f’
 # Using +F will put less in follow mode. This works similar to ‘tail -f’.
 # To stop scrolling, use the interrupt. Then you’ll get the normal benefits of less (scroll, etc.).
 # Pressing SHIFT-F will resume the ‘tailling’.
-------------------------------------------------------------------------------------
-ping -i 60 -a IP_address
 
+less +F somelogfile
+
+------------------------------------------------------------------------------------
 # Set audible alarm when an IP address comes online
 # Waiting for your server to finish rebooting? Issue the command above and you will hear a beep when it comes online.
 # The -i 60 flag tells ping to wait for 60 seconds between ping, putting less strain on your system.
 # Vary it to your need. The -a flag tells ping to include an audible bell in the output when 
 # a package is received (that is, when your server comes online).
-------------------------------------------------------------------------------------
-echo "You can simulate on-screen typing just like in the movies" | pv -qL 10
 
+ping -i 60 -a IP_address
+
+------------------------------------------------------------------------------------
 # Simulate typing
 # This will output the characters at 10 per second.
-------------------------------------------------------------------------------------
-python -m smtpd -n -c DebuggingServer localhost:1025
 
+echo "You can simulate on-screen typing just like in the movies" | pv -qL 10
+
+------------------------------------------------------------------------------------
 # This command will start a simple SMTP server listening on port 1025 of localhost.
 # This server simply prints to standard output all email headers and the email body.
-------------------------------------------------------------------------------------
-diff <(sort file1) <(sort file2)
 
+python -m smtpd -n -c DebuggingServer localhost:1025
+
+------------------------------------------------------------------------------------
 # diff two unsorted files without creating temporary files
 # bash/ksh subshell redirection (as file descriptors) used as input to diff
+
+diff <(sort file1) <(sort file2)
+
 ------------------------------------------------------------------------------------
+# Rip audio from a video file.
 mplayer -ao pcm -vo null -vc dummy -dumpaudio -dumpfile <output-file> <input-file>
 
-# Rip audio from a video file.
 ------------------------------------------------------------------------------------
+# Matrix Style
 tr -c “[:digit:]” ” ” < /dev/urandom | dd cbs=$COLUMNS conv=unblock | GREP_COLOR=”1;32″ grep –color “[^ ]“
 
-# Matrix Style
 ------------------------------------------------------------------------------------
-sudo dd if=/dev/mem | cat | strings
-
 # This command will show you all the string (plain text) values in ram
 # A fun thing to do with ram is actually open it up and take a peek.
+
+sudo dd if=/dev/mem | cat | strings
+
 ------------------------------------------------------------------------------------
+# Display which distro is installed
 cat /etc/issue
 
-# Display which distro is installed
 ------------------------------------------------------------------------------------
+# Easily search running processes (alias).
 alias ‘ps?’='ps ax | grep ‘
 
-# Easily search running processes (alias).
 ------------------------------------------------------------------------------------
-echo “!!” > foo.sh
-
 # Create a script of the last executed command
 # Sometimes commands are long, but useful, so it’s helpful to be able to make them permanent without having to retype them.
 # An alternative could use the history command, and a cut/sed line that works on your platform.
+
+echo “!!” > foo.sh
+
 ------------------------------------------------------------------------------------
+# Extract tarball from internet without local saving
+
 wget -qO – “http://www.tarball.com/tarball.gz” | tar zxvf -
 
-# Extract tarball from internet without local saving
 ------------------------------------------------------------------------------------
-nc -vv -l -p 1234 -e /bin/bash
-
 # Create a backdoor on a machine to allow remote connection to bash
 # This will launch a listener on the machine that will wait for a connection on port 1234.
 # When you connect from a remote machine with something like :
 # nc 192.168.0.1 1234
 # You will have console access to the machine through bash. (becareful with this one)
-------------------------------------------------------------------------------------
-sshfs name@server:/path/to/folder /path/to/mount/point
 
+nc -vv -l -p 1234 -e /bin/bash
+
+------------------------------------------------------------------------------------
 # Mount folder/filesystem through SSH
 # Install SSHFS from http://fuse.sourceforge.net/sshfs.html
 # Will allow you to mount a folder security over a network.
-------------------------------------------------------------------------------------
-!!:gs/foo/bar
 
+sshfs name@server:/path/to/folder /path/to/mount/point
+
+------------------------------------------------------------------------------------
 # Runs previous command replacing foo by bar every time that foo appears
 # Very useful for rerunning a long command changing some arguments globally.
 # As opposed to ^foo^bar, which only replaces the first occurrence of foo, this one changes every occurrence.
-------------------------------------------------------------------------------------
-mount | column -t
 
+!!:gs/foo/bar
+
+------------------------------------------------------------------------------------
 # Currently mounted file systems in nice layout
 # Particularly useful if you’re mounting different drives, using the following command will
 # allow you to see all the file systems currently mounted on your computer and their respective specs
 # with the added benefit of nice formatting.
-------------------------------------------------------------------------------------
-ssh user@host cat /path/to/remotefile | diff /path/to/localfile -
 
+mount | column -t
+
+------------------------------------------------------------------------------------
 # Compare a remote file with a local file
 # Useful for checking if there are differences between local and remote files.
-------------------------------------------------------------------------------------
-mount -t tmpfs tmpfs /mnt -o size=1024m
 
+ssh user@host cat /path/to/remotefile | diff /path/to/localfile -
+
+------------------------------------------------------------------------------------
 # Mount a temporary ram partition
 # Makes a partition in ram which is useful if you need a temporary working space as read/write access is fast.
 # Be aware that anything saved in this partition will be gone after your computer is turned off.
-------------------------------------------------------------------------------------
-dig +short txt <keyword>.wp.dg.cx
 
+mount -t tmpfs tmpfs /mnt -o size=1024m
+
+------------------------------------------------------------------------------------
 # Query Wikipedia via console over DNS
 # Query Wikipedia by issuing a DNS query for a TXT record.
 # The TXT record will also include a short URL to the complete corresponding Wikipedia entry.
-------------------------------------------------------------------------------------
-netstat -tlnp
 
+dig +short txt <keyword>.wp.dg.cx
+
+------------------------------------------------------------------------------------
 # Lists all listening ports together with the PID of the associated process
 # The PID will only be printed if you’re holding a root equivalent ID.
-------------------------------------------------------------------------------------
-dd if=/dev/dsp | ssh -c arcfour -C username@host dd of=/dev/dsp
 
+netstat -tlnp
+
+------------------------------------------------------------------------------------
 # Output your microphone to a remote computer’s speaker
 # This will output the sound from your microphone port to the ssh target computer’s speaker port.
 # The sound quality is very bad, so you will hear a lot of hissing.
-------------------------------------------------------------------------------------
-echo “ls -l” | at midnight
 
+dd if=/dev/dsp | ssh -c arcfour -C username@host dd of=/dev/dsp
+
+------------------------------------------------------------------------------------
 # Execute a command at a given time
 # This is an alternative to cron which allows a one-off task to be scheduled for a certain time.
+
+echo “ls -l” | at midnight
+
 ------------------------------------------------------------------------------------
+# Update twitter via curl
 curl -u user:pass -d status=”Tweeting from the shell” http://twitter.com/statuses/update.xml
 
-# Update twitter via curl
 ------------------------------------------------------------------------------------
-ssh -N -L2001:localhost:80 somemachine
-
 # start a tunnel from some machine’s port 80 to your local post 2001
 # now you can access the website by going to http://localhost:2001/
-------------------------------------------------------------------------------------
-reset
 
+ssh -N -L2001:localhost:80 somemachine
+
+------------------------------------------------------------------------------------
 # Salvage a broken terminal
 # If you bork your terminal by sending binary data to STDOUT or similar,
 # you can get your terminal back using this command rather than killing and restarting the session.
 # Note that you often won’t be able to see the characters as you type them.
+
+reset
+
 ------------------------------------------------------------------------------------
+# Capture video of a Linux desktop
 ffmpeg -f x11grab -s wxga -r 25 -i :0.0 -sameq /tmp/out.mpg
 
-# Capture video of a Linux desktop
 ------------------------------------------------------------------------------------
-> file.txt
-
 # Empty a file
 # For when you want to flush all content from a file without removing it (hat-tip to Marc Kilgus).
-------------------------------------------------------------------------------------
-$ssh-copy-id user@host
 
+> file.txt
+
+------------------------------------------------------------------------------------
 # Copy ssh keys to user@host to enable password-less ssh logins.
 # To generate the keys use the command ssh-keygen
-------------------------------------------------------------------------------------
-<ctrl> + <x> + <e>
 
+$ssh-copy-id user@host
+
+------------------------------------------------------------------------------------
 # Rapidly invoke an editor to write a long, complex, or tricky command
 # Next time you are using your shell, try typing ctrl-x e (that is holding control key press x and then e).
 # The shell will take what you’ve written on the command line thus far and paste it into the editor specified by $EDITOR.
 # Then you can edit at leisure using all the powerful macros and commands of vi, emacs, nano, or whatever.
-------------------------------------------------------------------------------------
-!whatever:p
 
+<ctrl> + <x> + <e>
+
+------------------------------------------------------------------------------------
 # Check command history, but avoid running it
 # !whatever will search your command history and execute the first command that matches ‘whatever’.
 # If you don’t feel safe doing this put :p on #the end to print without executing. Recommended when running as superuser.
-------------------------------------------------------------------------------------
-mtr google.com
 
-# Create a report for 20 times
-mtr google.com -l --report --report-cycles=20 >> google.com.txt
+!whatever:p
 
+------------------------------------------------------------------------------------
 # mtr, better than traceroute and ping combined
 # mtr combines the functionality of the traceroute and ping programs in a single network diagnostic tool.
 # as mtr starts, it investigates the network connection between the host mtr runs on and HOSTNAME.
 # by sending packets with purposly low TTLs. It continues to send packets with low TTL,
 # noting the response time of the intervening routers.
 # This allows mtr to print the response percentage and response times of the internet route to HOSTNAME.
 # A sudden increase in packetloss or response time is often an indication of a bad (or simply over‐loaded) link.
-------------------------------------------------------------------------------------
-sudo !!
 
+mtr google.com
+
+# Create a report for 20 times
+mtr google.com -l --report --report-cycles=20 >> google.com.txt
+
+------------------------------------------------------------------------------------
 # Run the last command as root
 # Useful when you forget to use sudo for a command. “!!” grabs the last run command.
+
+sudo !!
+
 ------------------------------------------------------------------------------------
+# Serve current directory tree at http://$HOSTNAME:8000/
 python -m SimpleHTTPServer
 
-# Serve current directory tree at http://$HOSTNAME:8000/
 ------------------------------------------------------------------------------------
-cd -
 # Change to the previous working directory
+cd -
+
 ------------------------------------------------------------------------------------
diff --git a/linux_commands.txt b/linux_commands.txt
@@ -9,13 +9,22 @@ git diff --diff-filter=D --name-only -z | xargs -0 git rm
 # source: http://www.pixelbeat.org/cmdline.html
 # Enjoy!
 
-find . -type f -print0 | xargs -0 chmod 660
+------------------------------------------------------------------------------------
+# To recursively give directories read&execute privileges:
 
-# chmod only files in current dir
+find /path/to/base/dir -type d -exec chmod 755 {} +
 ------------------------------------------------------------------------------------
-du -h --max-depth=1
+# To recursively give files read privileges:
 
+find /path/to/base/dir -type f -exec chmod 644 {} +
+------------------------------------------------------------------------------------
+# chmod only files in current dir
+
+find . -type f -print0 | xargs -0 chmod 660
+------------------------------------------------------------------------------------
 # List the size (in human readable form) of all sub folders from the current location
+
+du -h --max-depth=1
 ------------------------------------------------------------------------------------
 rsync -auz -e ssh remote:/dir/ . && rsync -auz -e ssh . remote:/dir/
 

diff --git a/linux_commands.txt b/linux_commands.txt
@@ -13,7 +13,7 @@ find . -type f -print0 | xargs -0 chmod 660
 
 # chmod only files in current dir
 ------------------------------------------------------------------------------------
-du -h –-max-depth=1
+du -h --max-depth=1
 
 # List the size (in human readable form) of all sub folders from the current location
 ------------------------------------------------------------------------------------

diff --git a/linux_commands → linux_commands.txt b/linux_commands → linux_commands.txt
diff --git a/linux_commands b/linux_commands
@@ -1,3 +1,8 @@
+# git commands
+
+# remove all deleted files from staging area
+git diff --diff-filter=D --name-only -z | xargs -0 git rm
+
 # I book marked some sites with useful Linux commands i found.
 # then i noticed they were down, so i loaded them via google cache, and copied here.
 # source: http://blog.urfix.com/

diff --git a/linux_commands b/linux_commands
@@ -4,6 +4,13 @@
 # source: http://www.pixelbeat.org/cmdline.html
 # Enjoy!
 
+find . -type f -print0 | xargs -0 chmod 660
+
+# chmod only files in current dir
+------------------------------------------------------------------------------------
+du -h –-max-depth=1
+
+# List the size (in human readable form) of all sub folders from the current location
 ------------------------------------------------------------------------------------
 rsync -auz -e ssh remote:/dir/ . && rsync -auz -e ssh . remote:/dir/
 
@@ -173,10 +180,6 @@ wget –random-wait -r -p -e robots=off -U mozilla http://www.example.com
 # -b continues wget after logging out.
 # -o $HOME/wget_log.txt logs the output
 ------------------------------------------------------------------------------------
-du -h –max-depth=1
-
-# List the size (in human readable form) of all sub folders from the current location
-------------------------------------------------------------------------------------
 time read
 time read -sn1 
 

diff --git a/linux_commands b/linux_commands
@@ -9,6 +9,10 @@ rsync -auz -e ssh remote:/dir/ . && rsync -auz -e ssh . remote:/dir/
 
 # Synchronize current directory with remote one
 ------------------------------------------------------------------------------------
+wget -mk -nv http://yoursite.com
+
+# Mirror web site
+------------------------------------------------------------------------------------
 rsync -az -e ssh --delete ~/public_html/ remote.com:'~/public_html'
 
 # Mirror web site (using compression and encryption)

diff --git a/linux_commands b/linux_commands
@@ -61,7 +61,7 @@ ffmpeg -f x11grab -r 25 -s 800x600 -i :0.0 /tmp/outputFile.mpg
 # Record a screencast and convert it to an mpeg
 # Grab X11 input and create an MPEG at 25 fps with the resolution 800×600
 ------------------------------------------------------------------------------------
-ffmpeg -f x11grab -r 30 -s 1680x1050 -i :0.0 -vcodec libx264 -vpre hq -threads 0 -mbd rd -flags mv0 -trellis 2 -cmp 2 -subcmp 2 -g 300 -pass 1/2 -b 4000000 /tmp/outputFile.mp4
+ffmpeg -f x11grab -r 30 -s 1680x1050 -i :0.0 -vcodec libx264 -vpre hq -threads 0 -mbd rd -flags mv0 -trellis 2 -cmp 2 -subcmp 2 -g 300 -pass 1/2 -b 4000k /tmp/outputFile.mp4
 
 # Same, but in good quality, h264
 ------------------------------------------------------------------------------------

diff --git a/linux_commands b/linux_commands
@@ -61,6 +61,10 @@ ffmpeg -f x11grab -r 25 -s 800x600 -i :0.0 /tmp/outputFile.mpg
 # Record a screencast and convert it to an mpeg
 # Grab X11 input and create an MPEG at 25 fps with the resolution 800×600
 ------------------------------------------------------------------------------------
+ffmpeg -f x11grab -r 30 -s 1680x1050 -i :0.0 -vcodec libx264 -vpre hq -threads 0 -mbd rd -flags mv0 -trellis 2 -cmp 2 -subcmp 2 -g 300 -pass 1/2 -b 4000000 /tmp/outputFile.mp4
+
+# Same, but in good quality, h264
+------------------------------------------------------------------------------------
 mount /path/to/file.iso /mnt/cdrom -oloop
 
 # Mount a .iso file in UNIX/Linux

diff --git a/linux_commands b/linux_commands
@@ -1,9 +1,34 @@
 # I book marked some sites with useful Linux commands i found.
 # then i noticed they were down, so i loaded them via google cache, and copied here.
 # source: http://blog.urfix.com/
+# source: http://www.pixelbeat.org/cmdline.html
 # Enjoy!
 
+------------------------------------------------------------------------------------
+rsync -auz -e ssh remote:/dir/ . && rsync -auz -e ssh . remote:/dir/
+
+# Synchronize current directory with remote one
+------------------------------------------------------------------------------------
+rsync -az -e ssh --delete ~/public_html/ remote.com:'~/public_html'
+
+# Mirror web site (using compression and encryption)
+------------------------------------------------------------------------------------
+gpg -c file
+
+# Encrypt file
+------------------------------------------------------------------------------------
+gpg file.gpg
+
+# Decrypt file
+------------------------------------------------------------------------------------
+find /etc/httpd | grep --color "filename"
 
+# Find and highlight results
+------------------------------------------------------------------------------------
+find -type f ! -perm -444
+
+# Find files not readable by all (useful for web site)
+------------------------------------------------------------------------------------
 pv access.log | gzip > access.log.gz
 
 # Monitor progress of a command

diff --git a/linux_commands b/linux_commands
@@ -362,6 +362,9 @@ $ssh-copy-id user@host
 ------------------------------------------------------------------------------------
 mtr google.com
 
+# Create a report for 20 times
+mtr google.com -l --report --report-cycles=20 >> google.com.txt
+
 # mtr, better than traceroute and ping combined
 # mtr combines the functionality of the traceroute and ping programs in a single network diagnostic tool.
 # as mtr starts, it investigates the network connection between the host mtr runs on and HOSTNAME.

diff --git a/linux_commands b/linux_commands
@@ -3,6 +3,7 @@
 # source: http://blog.urfix.com/
 # Enjoy!
 
+
 pv access.log | gzip > access.log.gz
 
 # Monitor progress of a command
@@ -11,80 +12,71 @@ pv access.log | gzip > access.log.gz
 # of how quickly data is passing through, how long it has taken, how near to completion it is,
 # and an estimate of how long it will be until completion.
 # Source: http://www.catonmat.net/blog/unix-utilities-pipe-viewer/
-
-
+------------------------------------------------------------------------------------
 ls -R | grep ":$" | sed -e 's/:$//' -e 's/[^-][^\/]*\//--/g' -e 's/^/   /' -e 's/-/|/'
 
 # Prints a graphical directory tree from your current directory
-
-
+------------------------------------------------------------------------------------
 rm !(*.foo|*.bar|*.baz)
 
 # Deletes all files in a folder that are NOT *.foo, *.bar or *.baz files. Edit the pattern inside the brackets as you like.
-
-
+------------------------------------------------------------------------------------
 strace -ff -e trace=write -e write=1,2 -p SOME_PID
 
 # Intercept stdout/stderr of another process
-
-
+------------------------------------------------------------------------------------
 awk '!x[$0]++' <file>
 
 # Remove duplicate entries in a file without sorting.
 # Using awk, find duplicates in a file without sorting, which reorders the contents.
 # awk will not reorder them, and still find and remove duplicates which you can then redirect into another file.
-
-
+------------------------------------------------------------------------------------
 ffmpeg -f x11grab -r 25 -s 800x600 -i :0.0 /tmp/outputFile.mpg
 
 # Record a screencast and convert it to an mpeg
 # Grab X11 input and create an MPEG at 25 fps with the resolution 800×600
-
-
+------------------------------------------------------------------------------------
 mount /path/to/file.iso /mnt/cdrom -oloop
 
 # Mount a .iso file in UNIX/Linux
 # -o loop lets you use a file as a block device
-
-
+------------------------------------------------------------------------------------
 date -d@1234567890
 
 # Convert seconds to human-readable format
 # This example, for example, produces the output, “Fri Feb 13 15:26:30 EST 2009″
-
-
+------------------------------------------------------------------------------------
 ^Z $bg $disown
 
 # Job Control
 # You’re running a script, command, whatever.. You don’t expect it to take long, now 5pm has rolled around and you’re ready to go home...
 # Wait, it’s still running! You forgot to nohup it before running it..
 # Suspend it, send it to the background, then disown it...
 # The output wont go anywhere, but at least the command will still run...
-
-
+------------------------------------------------------------------------------------
 vim scp://username@host//path/to/somefile
 
 # Edit a file on a remote host using vim
-
-
+------------------------------------------------------------------------------------
 watch -n 1 mysqladmin --user=<user> --password=<password> processlist
 
 # Monitor the queries being run by MySQL
 # Watch is a very useful command for periodically running another command –
 # in this using mysqladmin to display the processlist.
 # This is useful for monitoring which queries are causing your server to clog up.
 # More info here: http://codeinthehole.com/archives/2-Monitoring-MySQL-processes.html
-
+------------------------------------------------------------------------------------
 \[command]
 
 # Escape any command aliases
 # e.g. if rm is aliased for ‘rm -i’, you can escape the alias by prepending a backslash:
-
+------------------------------------------------------------------------------------
 ss -p
-# Show apps that use internet connection at the moment. (Multi-Language)
-for one line per process:
 
+# Show apps that use internet connection at the moment. (Multi-Language)
+------------------------------------------------------------------------------------
 notify-send ["<title>"] "<body>"
+
 # Send pop-up notifications on Gnome
 # The title is optional.
 # 
@@ -94,47 +86,48 @@ notify-send ["<title>"] "<body>"
 # On Debian-based systems you may need to install the ‘libnotify-bin’ package.
 # Useful to advise when a wget download or a simulation ends. Example:
 # wget URL ; notify-send "Done"
-
+------------------------------------------------------------------------------------
 mv filename.{old,new}
-# Quickly rename a file
 
+# Quickly rename a file
+------------------------------------------------------------------------------------
 cp filename{,.bak}
-# Quickly backup or copy a file with bash
 
+# Quickly backup or copy a file with bash
+------------------------------------------------------------------------------------
 rm -f !(survivior.txt)
-# Remove all but one specific file
 
+# Remove all but one specific file
+------------------------------------------------------------------------------------
 strings /dev/urandom | grep -o '[[:alnum:]]' | head -n 30 | tr -d '\n'; echo
+
 # Generate a random password 30 characters long
 # Find random strings within /dev/urandom.
 # Using grep filter to just Alphanumeric characters, and then print the first 30 and remove all the line feeds.
-
+------------------------------------------------------------------------------------
 echo "rm -rf /unwanted-but-large/folder" | batch
+
 # Run a command only when load average is below a certain threshold
 # Good for one off jobs that you want to run at a quiet time.
 # The default threshold is a load average of 0.8 but this can be set using atrun.
-
+------------------------------------------------------------------------------------
 watch -n 1 'echo "obase=2;`date +%s`" | bc'
 
 # Create a binary clock.
-
-
+------------------------------------------------------------------------------------
 dd if=/dev/zero of=/dev/null bs=1M count=32768
 
 # Processor / memory bandwidthd? in GB/s
 # Read 32GB zero’s and throw them away.
-
-
+------------------------------------------------------------------------------------
 for I in $(mysql -e 'show databases' -s --skip-column-names); do mysqldump $I | gzip > "$I.sql.gz"; done
 
 # Backup all MySQL Databases to individual files
-
-
+------------------------------------------------------------------------------------
 watch -d -n 2 ‘df; ls -FlAt;’
 
 # Like top, but for files
-
-
+------------------------------------------------------------------------------------
 wget –random-wait -r -p -e robots=off -U mozilla http://www.example.com
 
 # Download an entire website
@@ -146,59 +139,49 @@ wget –random-wait -r -p -e robots=off -U mozilla http://www.example.com
 # –limit-rate=20k limits the rate at which it downloads files.
 # -b continues wget after logging out.
 # -o $HOME/wget_log.txt logs the output
-
-
+------------------------------------------------------------------------------------
 du -h –max-depth=1
 
 # List the size (in human readable form) of all sub folders from the current location
-
-
+------------------------------------------------------------------------------------
 time read
 time read -sn1 
 
 # A very simple and useful stopwatch, <ctrl> + <d> to stop
 # s:silent, n:number of characters.
-
-
+------------------------------------------------------------------------------------
 man ascii
 
 # Quick access to the ASCII table.
-
-
+------------------------------------------------------------------------------------
 net rpc shutdown -I ipAddressOfWindowsPC -U username%password
 
 # Shutdown a Windows machine from Linux
 # This will issue a shutdown command to the Windows machine.
 # username must be an administrator on the Windows machine.
 # Requires samba-common package installed.
-
-
+------------------------------------------------------------------------------------
 net rpc shutdown -r
 
 # Reboot the Windows machine
-
-
+------------------------------------------------------------------------------------
 net rpc abortshutdown
 
 # Abort shut down of the Windows machine
-
-
+------------------------------------------------------------------------------------
 (cd /tmp && ls)
 
 # Jump to a directory, execute a command and jump back to current directory.
-
-
+------------------------------------------------------------------------------------
 ps aux | sort -nk +4 | tail
 
 # Display the top ten running processes – sorted by memory usage
 # ps returns all running processes which are then sorted by the 4th field in numerical order and the top 10 are sent to STDOUT.
-
-
+------------------------------------------------------------------------------------
 history | awk ‘{a[$2]++}END{for(i in a){print a[i] ” ” i}}’ | sort -rn | head
 
 # List of commands you use most often
-
-
+------------------------------------------------------------------------------------
 <alt> + <print screen/sys rq> + <R> – <S> – <E> – <I> – <U> – <B>
 
 # Reboot machine when everything is hanging (raising a skinny elephant)
@@ -212,202 +195,171 @@ history | awk ‘{a[$2]++}END{for(i in a){print a[i] ” ” i}}’ | sort -rn |
 # B – reboots the system
 # Save your file before trying this out, this will reboot your machine without warning!
 # http://en.wikipedia.org/wiki/Magic_SysRq_key
-
-
+------------------------------------------------------------------------------------
 less +F somelogfile
 
 # Make ‘less’ behave like ‘tail -f’
 # Using +F will put less in follow mode. This works similar to ‘tail -f’.
 # To stop scrolling, use the interrupt. Then you’ll get the normal benefits of less (scroll, etc.).
 # Pressing SHIFT-F will resume the ‘tailling’.
-
-
+------------------------------------------------------------------------------------
 ping -i 60 -a IP_address
 
 # Set audible alarm when an IP address comes online
 # Waiting for your server to finish rebooting? Issue the command above and you will hear a beep when it comes online.
 # The -i 60 flag tells ping to wait for 60 seconds between ping, putting less strain on your system.
 # Vary it to your need. The -a flag tells ping to include an audible bell in the output when 
 # a package is received (that is, when your server comes online).
-
-
+------------------------------------------------------------------------------------
 echo "You can simulate on-screen typing just like in the movies" | pv -qL 10
 
 # Simulate typing
 # This will output the characters at 10 per second.
-
-
+------------------------------------------------------------------------------------
 python -m smtpd -n -c DebuggingServer localhost:1025
 
 # This command will start a simple SMTP server listening on port 1025 of localhost.
 # This server simply prints to standard output all email headers and the email body.
-
-
+------------------------------------------------------------------------------------
 diff <(sort file1) <(sort file2)
 
 # diff two unsorted files without creating temporary files
 # bash/ksh subshell redirection (as file descriptors) used as input to diff
-
-
+------------------------------------------------------------------------------------
 mplayer -ao pcm -vo null -vc dummy -dumpaudio -dumpfile <output-file> <input-file>
 
 # Rip audio from a video file.
-
-
+------------------------------------------------------------------------------------
 tr -c “[:digit:]” ” ” < /dev/urandom | dd cbs=$COLUMNS conv=unblock | GREP_COLOR=”1;32″ grep –color “[^ ]“
 
 # Matrix Style
-
-
+------------------------------------------------------------------------------------
 sudo dd if=/dev/mem | cat | strings
 
 # This command will show you all the string (plain text) values in ram
 # A fun thing to do with ram is actually open it up and take a peek.
-
-
+------------------------------------------------------------------------------------
 cat /etc/issue
 
 # Display which distro is installed
-
-
+------------------------------------------------------------------------------------
 alias ‘ps?’='ps ax | grep ‘
 
 # Easily search running processes (alias).
-
-
+------------------------------------------------------------------------------------
 echo “!!” > foo.sh
 
 # Create a script of the last executed command
 # Sometimes commands are long, but useful, so it’s helpful to be able to make them permanent without having to retype them.
 # An alternative could use the history command, and a cut/sed line that works on your platform.
-
-
+------------------------------------------------------------------------------------
 wget -qO – “http://www.tarball.com/tarball.gz” | tar zxvf -
 
 # Extract tarball from internet without local saving
-
-
+------------------------------------------------------------------------------------
 nc -vv -l -p 1234 -e /bin/bash
 
 # Create a backdoor on a machine to allow remote connection to bash
 # This will launch a listener on the machine that will wait for a connection on port 1234.
 # When you connect from a remote machine with something like :
 # nc 192.168.0.1 1234
 # You will have console access to the machine through bash. (becareful with this one)
-
-
+------------------------------------------------------------------------------------
 sshfs name@server:/path/to/folder /path/to/mount/point
 
 # Mount folder/filesystem through SSH
 # Install SSHFS from http://fuse.sourceforge.net/sshfs.html
 # Will allow you to mount a folder security over a network.
-
-
+------------------------------------------------------------------------------------
 !!:gs/foo/bar
 
 # Runs previous command replacing foo by bar every time that foo appears
 # Very useful for rerunning a long command changing some arguments globally.
 # As opposed to ^foo^bar, which only replaces the first occurrence of foo, this one changes every occurrence.
-
-
+------------------------------------------------------------------------------------
 mount | column -t
 
 # Currently mounted file systems in nice layout
 # Particularly useful if you’re mounting different drives, using the following command will
 # allow you to see all the file systems currently mounted on your computer and their respective specs
 # with the added benefit of nice formatting.
-
-
+------------------------------------------------------------------------------------
 ssh user@host cat /path/to/remotefile | diff /path/to/localfile -
 
 # Compare a remote file with a local file
 # Useful for checking if there are differences between local and remote files.
-
-
+------------------------------------------------------------------------------------
 mount -t tmpfs tmpfs /mnt -o size=1024m
 
 # Mount a temporary ram partition
 # Makes a partition in ram which is useful if you need a temporary working space as read/write access is fast.
 # Be aware that anything saved in this partition will be gone after your computer is turned off.
-
-
+------------------------------------------------------------------------------------
 dig +short txt <keyword>.wp.dg.cx
 
 # Query Wikipedia via console over DNS
 # Query Wikipedia by issuing a DNS query for a TXT record.
 # The TXT record will also include a short URL to the complete corresponding Wikipedia entry.
-
-
+------------------------------------------------------------------------------------
 netstat -tlnp
 
 # Lists all listening ports together with the PID of the associated process
 # The PID will only be printed if you’re holding a root equivalent ID.
-
-
+------------------------------------------------------------------------------------
 dd if=/dev/dsp | ssh -c arcfour -C username@host dd of=/dev/dsp
 
 # Output your microphone to a remote computer’s speaker
 # This will output the sound from your microphone port to the ssh target computer’s speaker port.
 # The sound quality is very bad, so you will hear a lot of hissing.
-
-
+------------------------------------------------------------------------------------
 echo “ls -l” | at midnight
 
 # Execute a command at a given time
 # This is an alternative to cron which allows a one-off task to be scheduled for a certain time.
-
-
+------------------------------------------------------------------------------------
 curl -u user:pass -d status=”Tweeting from the shell” http://twitter.com/statuses/update.xml
 
 # Update twitter via curl
-
-
+------------------------------------------------------------------------------------
 ssh -N -L2001:localhost:80 somemachine
 
 # start a tunnel from some machine’s port 80 to your local post 2001
 # now you can access the website by going to http://localhost:2001/
-
-
+------------------------------------------------------------------------------------
 reset
 
 # Salvage a broken terminal
 # If you bork your terminal by sending binary data to STDOUT or similar,
 # you can get your terminal back using this command rather than killing and restarting the session.
 # Note that you often won’t be able to see the characters as you type them.
-
-
+------------------------------------------------------------------------------------
 ffmpeg -f x11grab -s wxga -r 25 -i :0.0 -sameq /tmp/out.mpg
 
 # Capture video of a Linux desktop
-
-
+------------------------------------------------------------------------------------
 > file.txt
 
 # Empty a file
 # For when you want to flush all content from a file without removing it (hat-tip to Marc Kilgus).
-
-
+------------------------------------------------------------------------------------
 $ssh-copy-id user@host
 
 # Copy ssh keys to user@host to enable password-less ssh logins.
 # To generate the keys use the command ssh-keygen
-
-
+------------------------------------------------------------------------------------
 <ctrl> + <x> + <e>
 
 # Rapidly invoke an editor to write a long, complex, or tricky command
 # Next time you are using your shell, try typing ctrl-x e (that is holding control key press x and then e).
 # The shell will take what you’ve written on the command line thus far and paste it into the editor specified by $EDITOR.
 # Then you can edit at leisure using all the powerful macros and commands of vi, emacs, nano, or whatever.
-
-
+------------------------------------------------------------------------------------
 !whatever:p
 
 # Check command history, but avoid running it
 # !whatever will search your command history and execute the first command that matches ‘whatever’.
 # If you don’t feel safe doing this put :p on #the end to print without executing. Recommended when running as superuser.
-
-
+------------------------------------------------------------------------------------
 mtr google.com
 
 # mtr, better than traceroute and ping combined
@@ -417,18 +369,16 @@ mtr google.com
 # noting the response time of the intervening routers.
 # This allows mtr to print the response percentage and response times of the internet route to HOSTNAME.
 # A sudden increase in packetloss or response time is often an indication of a bad (or simply over‐loaded) link.
-
-
+------------------------------------------------------------------------------------
 sudo !!
 
 # Run the last command as root
 # Useful when you forget to use sudo for a command. “!!” grabs the last run command.
-
-
+------------------------------------------------------------------------------------
 python -m SimpleHTTPServer
 
 # Serve current directory tree at http://$HOSTNAME:8000/
-
-
+------------------------------------------------------------------------------------
 cd -
 # Change to the previous working directory
+------------------------------------------------------------------------------------
diff --git a/linux_commands b/linux_commands
@@ -1,59 +1,82 @@
 # I book marked some sites with useful Linux commands i found.
 # then i noticed they were down, so i loaded them via google cache, and copied here.
+# source: http://blog.urfix.com/
 # Enjoy!
 
 pv access.log | gzip > access.log.gz
+
 # Monitor progress of a command
 # Pipe viewer is a terminal-based tool for monitoring the progress of data through a pipeline.
 # It can be inserted into any normal pipeline between two processes to give a visual indication
 # of how quickly data is passing through, how long it has taken, how near to completion it is,
 # and an estimate of how long it will be until completion.
 # Source: http://www.catonmat.net/blog/unix-utilities-pipe-viewer/
 
+
 ls -R | grep ":$" | sed -e 's/:$//' -e 's/[^-][^\/]*\//--/g' -e 's/^/   /' -e 's/-/|/'
+
 # Prints a graphical directory tree from your current directory
 
+
 rm !(*.foo|*.bar|*.baz)
+
 # Deletes all files in a folder that are NOT *.foo, *.bar or *.baz files. Edit the pattern inside the brackets as you like.
 
+
 strace -ff -e trace=write -e write=1,2 -p SOME_PID
+
 # Intercept stdout/stderr of another process
 
+
 awk '!x[$0]++' <file>
+
 # Remove duplicate entries in a file without sorting.
 # Using awk, find duplicates in a file without sorting, which reorders the contents.
 # awk will not reorder them, and still find and remove duplicates which you can then redirect into another file.
 
+
 ffmpeg -f x11grab -r 25 -s 800x600 -i :0.0 /tmp/outputFile.mpg
+
 # Record a screencast and convert it to an mpeg
 # Grab X11 input and create an MPEG at 25 fps with the resolution 800×600
 
+
 mount /path/to/file.iso /mnt/cdrom -oloop
+
 # Mount a .iso file in UNIX/Linux
 # -o loop lets you use a file as a block device
 
+
 date -d@1234567890
+
 # Convert seconds to human-readable format
 # This example, for example, produces the output, “Fri Feb 13 15:26:30 EST 2009″
 
+
 ^Z $bg $disown
+
 # Job Control
 # You’re running a script, command, whatever.. You don’t expect it to take long, now 5pm has rolled around and you’re ready to go home...
 # Wait, it’s still running! You forgot to nohup it before running it..
 # Suspend it, send it to the background, then disown it...
 # The output wont go anywhere, but at least the command will still run...
 
+
 vim scp://username@host//path/to/somefile
+
 # Edit a file on a remote host using vim
 
+
 watch -n 1 mysqladmin --user=<user> --password=<password> processlist
+
 # Monitor the queries being run by MySQL
 # Watch is a very useful command for periodically running another command –
 # in this using mysqladmin to display the processlist.
 # This is useful for monitoring which queries are causing your server to clog up.
 # More info here: http://codeinthehole.com/archives/2-Monitoring-MySQL-processes.html
 
 \[command]
+
 # Escape any command aliases
 # e.g. if rm is aliased for ‘rm -i’, you can escape the alias by prepending a backslash:
 
@@ -91,21 +114,29 @@ echo "rm -rf /unwanted-but-large/folder" | batch
 # Good for one off jobs that you want to run at a quiet time.
 # The default threshold is a load average of 0.8 but this can be set using atrun.
 
-
 watch -n 1 'echo "obase=2;`date +%s`" | bc'
+
 # Create a binary clock.
 
+
 dd if=/dev/zero of=/dev/null bs=1M count=32768
+
 # Processor / memory bandwidthd? in GB/s
 # Read 32GB zero’s and throw them away.
 
+
 for I in $(mysql -e 'show databases' -s --skip-column-names); do mysqldump $I | gzip > "$I.sql.gz"; done
+
 # Backup all MySQL Databases to individual files
 
+
 watch -d -n 2 ‘df; ls -FlAt;’
+
 # Like top, but for files
 
+
 wget –random-wait -r -p -e robots=off -U mozilla http://www.example.com
+
 # Download an entire website
 # -p parameter tells wget to include all files, including images.
 # -e robots=off you don’t want wget to obey by the robots.txt file
@@ -116,41 +147,60 @@ wget –random-wait -r -p -e robots=off -U mozilla http://www.example.com
 # -b continues wget after logging out.
 # -o $HOME/wget_log.txt logs the output
 
+
 du -h –max-depth=1
+
 # List the size (in human readable form) of all sub folders from the current location
 
+
 time read
 time read -sn1 
+
 # A very simple and useful stopwatch, <ctrl> + <d> to stop
 # s:silent, n:number of characters.
 
+
 man ascii
+
 # Quick access to the ASCII table.
 
+
 net rpc shutdown -I ipAddressOfWindowsPC -U username%password
+
 # Shutdown a Windows machine from Linux
 # This will issue a shutdown command to the Windows machine.
 # username must be an administrator on the Windows machine.
 # Requires samba-common package installed.
 
+
 net rpc shutdown -r
+
 # Reboot the Windows machine
 
 
 net rpc abortshutdown
+
 # Abort shut down of the Windows machine
 
+
 (cd /tmp && ls)
+
 # Jump to a directory, execute a command and jump back to current directory.
 
+
 ps aux | sort -nk +4 | tail
+
 # Display the top ten running processes – sorted by memory usage
 # ps returns all running processes which are then sorted by the 4th field in numerical order and the top 10 are sent to STDOUT.
 
+
 history | awk ‘{a[$2]++}END{for(i in a){print a[i] ” ” i}}’ | sort -rn | head
+
 # List of commands you use most often
 
+
 <alt> + <print screen/sys rq> + <R> – <S> – <E> – <I> – <U> – <B>
+
 # Reboot machine when everything is hanging (raising a skinny elephant)
 # If the machine is hanging and the only help would be the power button,
 # this key-combination will help to reboot your machine (more or less) gracefully.
@@ -163,13 +213,17 @@ history | awk ‘{a[$2]++}END{for(i in a){print a[i] ” ” i}}’ | sort -rn |
 # Save your file before trying this out, this will reboot your machine without warning!
 # http://en.wikipedia.org/wiki/Magic_SysRq_key
 
+
 less +F somelogfile
+
 # Make ‘less’ behave like ‘tail -f’
 # Using +F will put less in follow mode. This works similar to ‘tail -f’.
 # To stop scrolling, use the interrupt. Then you’ll get the normal benefits of less (scroll, etc.).
 # Pressing SHIFT-F will resume the ‘tailling’.
 
+
 ping -i 60 -a IP_address
+
 # Set audible alarm when an IP address comes online
 # Waiting for your server to finish rebooting? Issue the command above and you will hear a beep when it comes online.
 # The -i 60 flag tells ping to wait for 60 seconds between ping, putting less strain on your system.
@@ -178,127 +232,184 @@ ping -i 60 -a IP_address
 
 
 echo "You can simulate on-screen typing just like in the movies" | pv -qL 10
+
 # Simulate typing
 # This will output the characters at 10 per second.
 
+
 python -m smtpd -n -c DebuggingServer localhost:1025
+
 # This command will start a simple SMTP server listening on port 1025 of localhost.
 # This server simply prints to standard output all email headers and the email body.
 
+
 diff <(sort file1) <(sort file2)
+
 # diff two unsorted files without creating temporary files
 # bash/ksh subshell redirection (as file descriptors) used as input to diff
 
+
 mplayer -ao pcm -vo null -vc dummy -dumpaudio -dumpfile <output-file> <input-file>
+
 # Rip audio from a video file.
 
+
 tr -c “[:digit:]” ” ” < /dev/urandom | dd cbs=$COLUMNS conv=unblock | GREP_COLOR=”1;32″ grep –color “[^ ]“
+
 # Matrix Style
 
+
 sudo dd if=/dev/mem | cat | strings
+
 # This command will show you all the string (plain text) values in ram
 # A fun thing to do with ram is actually open it up and take a peek.
 
+
 cat /etc/issue
+
 # Display which distro is installed
 
+
 alias ‘ps?’='ps ax | grep ‘
+
 # Easily search running processes (alias).
 
+
 echo “!!” > foo.sh
+
 # Create a script of the last executed command
 # Sometimes commands are long, but useful, so it’s helpful to be able to make them permanent without having to retype them.
 # An alternative could use the history command, and a cut/sed line that works on your platform.
 
+
 wget -qO – “http://www.tarball.com/tarball.gz” | tar zxvf -
+
 # Extract tarball from internet without local saving
 
+
 nc -vv -l -p 1234 -e /bin/bash
+
 # Create a backdoor on a machine to allow remote connection to bash
 # This will launch a listener on the machine that will wait for a connection on port 1234.
 # When you connect from a remote machine with something like :
 # nc 192.168.0.1 1234
 # You will have console access to the machine through bash. (becareful with this one)
 
+
 sshfs name@server:/path/to/folder /path/to/mount/point
+
 # Mount folder/filesystem through SSH
 # Install SSHFS from http://fuse.sourceforge.net/sshfs.html
 # Will allow you to mount a folder security over a network.
 
+
 !!:gs/foo/bar
+
 # Runs previous command replacing foo by bar every time that foo appears
 # Very useful for rerunning a long command changing some arguments globally.
 # As opposed to ^foo^bar, which only replaces the first occurrence of foo, this one changes every occurrence.
 
+
 mount | column -t
+
 # Currently mounted file systems in nice layout
 # Particularly useful if you’re mounting different drives, using the following command will
 # allow you to see all the file systems currently mounted on your computer and their respective specs
 # with the added benefit of nice formatting.
 
+
 ssh user@host cat /path/to/remotefile | diff /path/to/localfile -
+
 # Compare a remote file with a local file
 # Useful for checking if there are differences between local and remote files.
 
+
 mount -t tmpfs tmpfs /mnt -o size=1024m
+
 # Mount a temporary ram partition
 # Makes a partition in ram which is useful if you need a temporary working space as read/write access is fast.
 # Be aware that anything saved in this partition will be gone after your computer is turned off.
 
+
 dig +short txt <keyword>.wp.dg.cx
+
 # Query Wikipedia via console over DNS
 # Query Wikipedia by issuing a DNS query for a TXT record.
 # The TXT record will also include a short URL to the complete corresponding Wikipedia entry.
 
+
 netstat -tlnp
+
 # Lists all listening ports together with the PID of the associated process
 # The PID will only be printed if you’re holding a root equivalent ID.
 
+
 dd if=/dev/dsp | ssh -c arcfour -C username@host dd of=/dev/dsp
+
 # Output your microphone to a remote computer’s speaker
 # This will output the sound from your microphone port to the ssh target computer’s speaker port.
 # The sound quality is very bad, so you will hear a lot of hissing.
 
+
 echo “ls -l” | at midnight
+
 # Execute a command at a given time
 # This is an alternative to cron which allows a one-off task to be scheduled for a certain time.
+
 
 curl -u user:pass -d status=”Tweeting from the shell” http://twitter.com/statuses/update.xml
+
 # Update twitter via curl
 
+
 ssh -N -L2001:localhost:80 somemachine
+
 # start a tunnel from some machine’s port 80 to your local post 2001
 # now you can access the website by going to http://localhost:2001/
 
+
 reset
+
 # Salvage a broken terminal
 # If you bork your terminal by sending binary data to STDOUT or similar,
 # you can get your terminal back using this command rather than killing and restarting the session.
 # Note that you often won’t be able to see the characters as you type them.
 
+
 ffmpeg -f x11grab -s wxga -r 25 -i :0.0 -sameq /tmp/out.mpg
+
 # Capture video of a Linux desktop
 
+
 > file.txt
+
 # Empty a file
 # For when you want to flush all content from a file without removing it (hat-tip to Marc Kilgus).
 
+
 $ssh-copy-id user@host
+
 # Copy ssh keys to user@host to enable password-less ssh logins.
 # To generate the keys use the command ssh-keygen
 
+
 <ctrl> + <x> + <e>
+
 # Rapidly invoke an editor to write a long, complex, or tricky command
 # Next time you are using your shell, try typing ctrl-x e (that is holding control key press x and then e).
 # The shell will take what you’ve written on the command line thus far and paste it into the editor specified by $EDITOR.
 # Then you can edit at leisure using all the powerful macros and commands of vi, emacs, nano, or whatever.
 
+
 !whatever:p
+
 # Check command history, but avoid running it
 # !whatever will search your command history and execute the first command that matches ‘whatever’.
 # If you don’t feel safe doing this put :p on #the end to print without executing. Recommended when running as superuser.
 
+
 mtr google.com
+
 # mtr, better than traceroute and ping combined
 # mtr combines the functionality of the traceroute and ping programs in a single network diagnostic tool.
 # as mtr starts, it investigates the network connection between the host mtr runs on and HOSTNAME.
@@ -307,12 +418,17 @@ mtr google.com
 # This allows mtr to print the response percentage and response times of the internet route to HOSTNAME.
 # A sudden increase in packetloss or response time is often an indication of a bad (or simply over‐loaded) link.
 
+
 sudo !!
+
 # Run the last command as root
 # Useful when you forget to use sudo for a command. “!!” grabs the last run command.
 
+
 python -m SimpleHTTPServer
+
 # Serve current directory tree at http://$HOSTNAME:8000/
 
+
 cd -
 # Change to the previous working directory
diff --git a/linux_commands b/linux_commands
@@ -28,9 +28,8 @@ ffmpeg -f x11grab -r 25 -s 800x600 -i :0.0 /tmp/outputFile.mpg
 # Record a screencast and convert it to an mpeg
 # Grab X11 input and create an MPEG at 25 fps with the resolution 800×600
 
-10) Mount a .iso file in UNIX/Linux
-
 mount /path/to/file.iso /mnt/cdrom -oloop
+# Mount a .iso file in UNIX/Linux
 # -o loop lets you use a file as a block device
 
 date -d@1234567890

diff --git a/linux_commands b/linux_commands
@@ -0,0 +1,319 @@
+# I book marked some sites with useful Linux commands i found.
+# then i noticed they were down, so i loaded them via google cache, and copied here.
+# Enjoy!
+
+pv access.log | gzip > access.log.gz
+# Monitor progress of a command
+# Pipe viewer is a terminal-based tool for monitoring the progress of data through a pipeline.
+# It can be inserted into any normal pipeline between two processes to give a visual indication
+# of how quickly data is passing through, how long it has taken, how near to completion it is,
+# and an estimate of how long it will be until completion.
+# Source: http://www.catonmat.net/blog/unix-utilities-pipe-viewer/
+
+ls -R | grep ":$" | sed -e 's/:$//' -e 's/[^-][^\/]*\//--/g' -e 's/^/   /' -e 's/-/|/'
+# Prints a graphical directory tree from your current directory
+
+rm !(*.foo|*.bar|*.baz)
+# Deletes all files in a folder that are NOT *.foo, *.bar or *.baz files. Edit the pattern inside the brackets as you like.
+
+strace -ff -e trace=write -e write=1,2 -p SOME_PID
+# Intercept stdout/stderr of another process
+
+awk '!x[$0]++' <file>
+# Remove duplicate entries in a file without sorting.
+# Using awk, find duplicates in a file without sorting, which reorders the contents.
+# awk will not reorder them, and still find and remove duplicates which you can then redirect into another file.
+
+ffmpeg -f x11grab -r 25 -s 800x600 -i :0.0 /tmp/outputFile.mpg
+# Record a screencast and convert it to an mpeg
+# Grab X11 input and create an MPEG at 25 fps with the resolution 800×600
+
+10) Mount a .iso file in UNIX/Linux
+
+mount /path/to/file.iso /mnt/cdrom -oloop
+# -o loop lets you use a file as a block device
+
+date -d@1234567890
+# Convert seconds to human-readable format
+# This example, for example, produces the output, “Fri Feb 13 15:26:30 EST 2009″
+
+^Z $bg $disown
+# Job Control
+# You’re running a script, command, whatever.. You don’t expect it to take long, now 5pm has rolled around and you’re ready to go home...
+# Wait, it’s still running! You forgot to nohup it before running it..
+# Suspend it, send it to the background, then disown it...
+# The output wont go anywhere, but at least the command will still run...
+
+vim scp://username@host//path/to/somefile
+# Edit a file on a remote host using vim
+
+watch -n 1 mysqladmin --user=<user> --password=<password> processlist
+# Monitor the queries being run by MySQL
+# Watch is a very useful command for periodically running another command –
+# in this using mysqladmin to display the processlist.
+# This is useful for monitoring which queries are causing your server to clog up.
+# More info here: http://codeinthehole.com/archives/2-Monitoring-MySQL-processes.html
+
+\[command]
+# Escape any command aliases
+# e.g. if rm is aliased for ‘rm -i’, you can escape the alias by prepending a backslash:
+
+ss -p
+# Show apps that use internet connection at the moment. (Multi-Language)
+for one line per process:
+
+notify-send ["<title>"] "<body>"
+# Send pop-up notifications on Gnome
+# The title is optional.
+# 
+# -t: expire time in milliseconds.
+# -u: urgency (low, normal, critical).
+# -i: icon path.
+# On Debian-based systems you may need to install the ‘libnotify-bin’ package.
+# Useful to advise when a wget download or a simulation ends. Example:
+# wget URL ; notify-send "Done"
+
+mv filename.{old,new}
+# Quickly rename a file
+
+cp filename{,.bak}
+# Quickly backup or copy a file with bash
+
+rm -f !(survivior.txt)
+# Remove all but one specific file
+
+strings /dev/urandom | grep -o '[[:alnum:]]' | head -n 30 | tr -d '\n'; echo
+# Generate a random password 30 characters long
+# Find random strings within /dev/urandom.
+# Using grep filter to just Alphanumeric characters, and then print the first 30 and remove all the line feeds.
+
+echo "rm -rf /unwanted-but-large/folder" | batch
+# Run a command only when load average is below a certain threshold
+# Good for one off jobs that you want to run at a quiet time.
+# The default threshold is a load average of 0.8 but this can be set using atrun.
+
+
+watch -n 1 'echo "obase=2;`date +%s`" | bc'
+# Create a binary clock.
+
+dd if=/dev/zero of=/dev/null bs=1M count=32768
+# Processor / memory bandwidthd? in GB/s
+# Read 32GB zero’s and throw them away.
+
+for I in $(mysql -e 'show databases' -s --skip-column-names); do mysqldump $I | gzip > "$I.sql.gz"; done
+# Backup all MySQL Databases to individual files
+
+watch -d -n 2 ‘df; ls -FlAt;’
+# Like top, but for files
+
+wget –random-wait -r -p -e robots=off -U mozilla http://www.example.com
+# Download an entire website
+# -p parameter tells wget to include all files, including images.
+# -e robots=off you don’t want wget to obey by the robots.txt file
+# -U mozilla as your browsers identity.
+# –random-wait to let wget chose a random number of seconds to wait, avoid get into black list.
+# Other Useful wget Parameters:
+# –limit-rate=20k limits the rate at which it downloads files.
+# -b continues wget after logging out.
+# -o $HOME/wget_log.txt logs the output
+
+du -h –max-depth=1
+# List the size (in human readable form) of all sub folders from the current location
+
+time read
+time read -sn1 
+# A very simple and useful stopwatch, <ctrl> + <d> to stop
+# s:silent, n:number of characters.
+
+man ascii
+# Quick access to the ASCII table.
+
+net rpc shutdown -I ipAddressOfWindowsPC -U username%password
+# Shutdown a Windows machine from Linux
+# This will issue a shutdown command to the Windows machine.
+# username must be an administrator on the Windows machine.
+# Requires samba-common package installed.
+
+net rpc shutdown -r
+# Reboot the Windows machine
+
+
+net rpc abortshutdown
+# Abort shut down of the Windows machine
+
+(cd /tmp && ls)
+# Jump to a directory, execute a command and jump back to current directory.
+
+ps aux | sort -nk +4 | tail
+# Display the top ten running processes – sorted by memory usage
+# ps returns all running processes which are then sorted by the 4th field in numerical order and the top 10 are sent to STDOUT.
+
+history | awk ‘{a[$2]++}END{for(i in a){print a[i] ” ” i}}’ | sort -rn | head
+# List of commands you use most often
+
+<alt> + <print screen/sys rq> + <R> – <S> – <E> – <I> – <U> – <B>
+# Reboot machine when everything is hanging (raising a skinny elephant)
+# If the machine is hanging and the only help would be the power button,
+# this key-combination will help to reboot your machine (more or less) gracefully.
+# R – gives back control of the keyboard
+# S – issues a sync
+# E – sends all processes but init the term singal
+# I – sends all processes but init the kill signal
+# U – mounts all filesystem ro to prevent a fsck at reboot
+# B – reboots the system
+# Save your file before trying this out, this will reboot your machine without warning!
+# http://en.wikipedia.org/wiki/Magic_SysRq_key
+
+less +F somelogfile
+# Make ‘less’ behave like ‘tail -f’
+# Using +F will put less in follow mode. This works similar to ‘tail -f’.
+# To stop scrolling, use the interrupt. Then you’ll get the normal benefits of less (scroll, etc.).
+# Pressing SHIFT-F will resume the ‘tailling’.
+
+ping -i 60 -a IP_address
+# Set audible alarm when an IP address comes online
+# Waiting for your server to finish rebooting? Issue the command above and you will hear a beep when it comes online.
+# The -i 60 flag tells ping to wait for 60 seconds between ping, putting less strain on your system.
+# Vary it to your need. The -a flag tells ping to include an audible bell in the output when 
+# a package is received (that is, when your server comes online).
+
+
+echo "You can simulate on-screen typing just like in the movies" | pv -qL 10
+# Simulate typing
+# This will output the characters at 10 per second.
+
+python -m smtpd -n -c DebuggingServer localhost:1025
+# This command will start a simple SMTP server listening on port 1025 of localhost.
+# This server simply prints to standard output all email headers and the email body.
+
+diff <(sort file1) <(sort file2)
+# diff two unsorted files without creating temporary files
+# bash/ksh subshell redirection (as file descriptors) used as input to diff
+
+mplayer -ao pcm -vo null -vc dummy -dumpaudio -dumpfile <output-file> <input-file>
+# Rip audio from a video file.
+
+tr -c “[:digit:]” ” ” < /dev/urandom | dd cbs=$COLUMNS conv=unblock | GREP_COLOR=”1;32″ grep –color “[^ ]“
+# Matrix Style
+
+sudo dd if=/dev/mem | cat | strings
+# This command will show you all the string (plain text) values in ram
+# A fun thing to do with ram is actually open it up and take a peek.
+
+cat /etc/issue
+# Display which distro is installed
+
+alias ‘ps?’='ps ax | grep ‘
+# Easily search running processes (alias).
+
+echo “!!” > foo.sh
+# Create a script of the last executed command
+# Sometimes commands are long, but useful, so it’s helpful to be able to make them permanent without having to retype them.
+# An alternative could use the history command, and a cut/sed line that works on your platform.
+
+wget -qO – “http://www.tarball.com/tarball.gz” | tar zxvf -
+# Extract tarball from internet without local saving
+
+nc -vv -l -p 1234 -e /bin/bash
+# Create a backdoor on a machine to allow remote connection to bash
+# This will launch a listener on the machine that will wait for a connection on port 1234.
+# When you connect from a remote machine with something like :
+# nc 192.168.0.1 1234
+# You will have console access to the machine through bash. (becareful with this one)
+
+sshfs name@server:/path/to/folder /path/to/mount/point
+# Mount folder/filesystem through SSH
+# Install SSHFS from http://fuse.sourceforge.net/sshfs.html
+# Will allow you to mount a folder security over a network.
+
+!!:gs/foo/bar
+# Runs previous command replacing foo by bar every time that foo appears
+# Very useful for rerunning a long command changing some arguments globally.
+# As opposed to ^foo^bar, which only replaces the first occurrence of foo, this one changes every occurrence.
+
+mount | column -t
+# Currently mounted file systems in nice layout
+# Particularly useful if you’re mounting different drives, using the following command will
+# allow you to see all the file systems currently mounted on your computer and their respective specs
+# with the added benefit of nice formatting.
+
+ssh user@host cat /path/to/remotefile | diff /path/to/localfile -
+# Compare a remote file with a local file
+# Useful for checking if there are differences between local and remote files.
+
+mount -t tmpfs tmpfs /mnt -o size=1024m
+# Mount a temporary ram partition
+# Makes a partition in ram which is useful if you need a temporary working space as read/write access is fast.
+# Be aware that anything saved in this partition will be gone after your computer is turned off.
+
+dig +short txt <keyword>.wp.dg.cx
+# Query Wikipedia via console over DNS
+# Query Wikipedia by issuing a DNS query for a TXT record.
+# The TXT record will also include a short URL to the complete corresponding Wikipedia entry.
+
+netstat -tlnp
+# Lists all listening ports together with the PID of the associated process
+# The PID will only be printed if you’re holding a root equivalent ID.
+
+dd if=/dev/dsp | ssh -c arcfour -C username@host dd of=/dev/dsp
+# Output your microphone to a remote computer’s speaker
+# This will output the sound from your microphone port to the ssh target computer’s speaker port.
+# The sound quality is very bad, so you will hear a lot of hissing.
+
+echo “ls -l” | at midnight
+# Execute a command at a given time
+# This is an alternative to cron which allows a one-off task to be scheduled for a certain time.
+
+curl -u user:pass -d status=”Tweeting from the shell” http://twitter.com/statuses/update.xml
+# Update twitter via curl
+
+ssh -N -L2001:localhost:80 somemachine
+# start a tunnel from some machine’s port 80 to your local post 2001
+# now you can access the website by going to http://localhost:2001/
+
+reset
+# Salvage a broken terminal
+# If you bork your terminal by sending binary data to STDOUT or similar,
+# you can get your terminal back using this command rather than killing and restarting the session.
+# Note that you often won’t be able to see the characters as you type them.
+
+ffmpeg -f x11grab -s wxga -r 25 -i :0.0 -sameq /tmp/out.mpg
+# Capture video of a Linux desktop
+
+> file.txt
+# Empty a file
+# For when you want to flush all content from a file without removing it (hat-tip to Marc Kilgus).
+
+$ssh-copy-id user@host
+# Copy ssh keys to user@host to enable password-less ssh logins.
+# To generate the keys use the command ssh-keygen
+
+<ctrl> + <x> + <e>
+# Rapidly invoke an editor to write a long, complex, or tricky command
+# Next time you are using your shell, try typing ctrl-x e (that is holding control key press x and then e).
+# The shell will take what you’ve written on the command line thus far and paste it into the editor specified by $EDITOR.
+# Then you can edit at leisure using all the powerful macros and commands of vi, emacs, nano, or whatever.
+
+!whatever:p
+# Check command history, but avoid running it
+# !whatever will search your command history and execute the first command that matches ‘whatever’.
+# If you don’t feel safe doing this put :p on #the end to print without executing. Recommended when running as superuser.
+
+mtr google.com
+# mtr, better than traceroute and ping combined
+# mtr combines the functionality of the traceroute and ping programs in a single network diagnostic tool.
+# as mtr starts, it investigates the network connection between the host mtr runs on and HOSTNAME.
+# by sending packets with purposly low TTLs. It continues to send packets with low TTL,
+# noting the response time of the intervening routers.
+# This allows mtr to print the response percentage and response times of the internet route to HOSTNAME.
+# A sudden increase in packetloss or response time is often an indication of a bad (or simply over‐loaded) link.
+
+sudo !!
+# Run the last command as root
+# Useful when you forget to use sudo for a command. “!!” grabs the last run command.
+
+python -m SimpleHTTPServer
+# Serve current directory tree at http://$HOSTNAME:8000/
+
+cd -
+# Change to the previous working directory
No results found