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  1. Aris S Ripandi revised this gist Jul 12, 2012. 1 changed file with 3 additions and 3 deletions.
    6 changes: 3 additions & 3 deletions linux-cmd-cheatsheet.md
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    ##File Permissions:
    * chmod octal file – change the permissions of file to octal, which can be found separately for user, group, and world by adding:
    * * 4 – read (r)
    * * 2 – write (w)
    * * 1 – execute (x)
    * 4 – read (r)
    * 2 – write (w)
    * 1 – execute (x)

    ###Examples:
    * chmod 777 – read, write, execute for all
  2. Aris S Ripandi created this gist Jul 12, 2012.
    108 changes: 108 additions & 0 deletions linux-cmd-cheatsheet.md
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    #Linux Cheat Sheet

    ##File Commands:
    * ls – directory listing
    * ls -al – formatted listing with hidden files
    * cd dir - change directory to dir
    * cd – change to home
    * pwd – show current directory
    * mkdir dir – create a directory dir
    * rm file – delete file
    * rm -r dir – delete directory dir
    * rm -f file – force remove file
    * rm -rf dir – force remove directory dir *
    * cp file1 file2 – copy file1 to file2
    * cp -r dir1 dir2 – copy dir1 to dir2; create dir2 if it doesn't exist
    * mv file1 file2 – rename or move file1 to file2 if file2 is an existing directory, moves file1 into directory file2
    * ln -s file link – create symbolic link link to file
    * touch file – create or update file
    * cat > file – places standard input into file
    * more file – output the contents of file
    * head file – output the first 10 lines of file
    * tail file – output the last 10 lines of file
    * tail -f file – output the contents of file as it grows, starting with the last 10 lines

    ##Process Management:
    * ps – display your currently active processes
    * top – display all running processes
    * kill pid – kill process id pid
    * killall proc – kill all processes named proc *
    * bg – lists stopped or background jobs; resume a stopped job in the background
    * fg – brings the most recent job to foreground
    * fg n – brings job n to the foreground

    ##File Permissions:
    * chmod octal file – change the permissions of file to octal, which can be found separately for user, group, and world by adding:
    * * 4 – read (r)
    * * 2 – write (w)
    * * 1 – execute (x)

    ###Examples:
    * chmod 777 – read, write, execute for all
    * chmod 755 – rwx for owner, rx for group and world

    ##SSH:
    * ssh user@host – connect to host as user
    * ssh -p port user@host – connect to host on port port as user
    * ssh-copy-id user@host – add your key to host for user to enable a keyed or passwordless login

    ##Searching:
    * grep pattern files – search for pattern in files
    * grep -r pattern dir – search recursively for pattern in dir
    * command | grep pattern – search for pattern in the output of command
    * locate file – find all instances of file

    ##System Info:
    * date – show the current date and time
    * cal – show this month's calendar
    * uptime – show current uptime
    * w – display who is online
    * whoami – who you are logged in as
    * finger user – display information about user
    * uname -a – show kernel information
    * cat /proc/cpuinfo – cpu information
    * cat /proc/meminfo – memory information
    * man command – show the manual for command
    * df – show disk usage
    * du – show directory space usage
    * free – show memory and swap usage
    * whereis app – show possible locations of app
    * which app – show which app will be run by default

    ##Compression:
    * tar cf file.tar files – create a tar named file.tar containing files
    * tar xf file.tar – extract the files from file.tar
    * tar czf file.tar.gz files – create a tar with Gzip compression
    * tar xzf file.tar.gz – extract a tar using Gzip
    * tar cjf file.tar.bz2 – create a tar with Bzip2 compression
    * tar xjf file.tar.bz2 – extract a tar using Bzip2
    * gzip file – compresses file and renames it to file.gz
    * gzip -d file.gz – decompresses file.gz back to file

    ##Network:
    * ping host – ping host and output results
    * whois domain – get whois information for domain
    * dig domain – get DNS information for domain
    * dig -x host – reverse lookup host
    * wget file – download file
    * wget -c file – continue a stopped download

    ##Installation:
    * dpkg -i pkg.deb – install a package (Debian)
    * rpm -Uvh pkg.rpm – install a package (RPM)

    ##Install from source:
    * ./configure
    * make
    * make install

    ##Shortcuts:
    * Ctrl+C – halts the current command
    * Ctrl+Z – stops the current command, resume with
    * fg in the foreground or bg in the background
    * Ctrl+D – log out of current session, similar to exit
    * Ctrl+W – erases one word in the current line
    * Ctrl+U – erases the whole line
    * Ctrl+R – type to bring up a recent command
    * !! - repeats the last command
    * exit – log out of current session