aka what i did to get from nothing to done.
note: these are designed to be primarily a re-install guide for myself (writing things down helps me memorize the knowledge), as such don't take any of this on blind faith - some areas are well tested and the docs are very robust, some items, less so). YMMV
| # bash ./hotspot.sh | |
| + '[' '!' -e /etc/kvmd/custom.dns ']' | |
| ++ sed 's/,$//' | |
| +++ grep '^nameserver' /etc/resolv.conf | |
| +++ awk '{print $2}' | |
| +++ sort -r -u | |
| ++ for i in `grep ^nameserver /etc/resolv.conf | awk '{print $2}' | sort -r -u` | |
| ++ echo -n 192.168.40.1, | |
| + NAMESERVERS=192.168.40.1 | |
| + [[ 192.168.40.1 == \1\2\7\.\0\.\0\.\1 ]] |
| DC TRACEROUTE: traceroute to 8.8.8.8 (8.8.8.8), 30 hops max, 60 byte packetsignoring detected country '', invalid or unknown | |
| # setxkbmap dk nodeadkeys | |
| # setxkbmap us | |
| # modprobe zfs | |
| # vgchange -an | |
| # pvremove -ff -y /dev/sda1 | |
| Labels on physical volume "/dev/sda1" successfully wiped. | |
| # zpool labelclear -f /dev/sda1 | |
| failed to clear label for /dev/sda1 | |
| # dd if=/dev/zero of=/dev/sda1 bs=1M count=16 |
| import sys,os | |
| import curses | |
| def draw_menu(stdscr): | |
| k = 0 | |
| cursor_x = 0 | |
| cursor_y = 0 | |
| # Clear and refresh the screen for a blank canvas | |
| stdscr.clear() |
| backup luks partition | |
| 1. Boot clonezilla | |
| 2. Drop into the command line | |
| 3. open the encrypted external drive partition | |
| cryptsetup luksOpen /dev/sda3 backup |
To limit a CPU to a certain C-state, you can pass the processor.max_cstate=X option in the kernel line of /boot/grub/grub.conf.
Here we limit the system to only C-State 1:
kernel /vmlinuz-2.6.18-371.1.2.el5 ... processor.max_cstate=1
On some systems, the kernel can override the BIOS setting, and the parameter intel_idle.max_cstate=0 may be required to ensure sleep states are not entered:
| #!/bin/sh | |
| #======================================= | |
| # config_vwifi.sh | |
| # Config virtual wi-fi (bridge to vlans) | |
| #======================================= | |
| # show which port you have by `robocfg show' | |
| PORT_LIST="0t 1t 2t 3t 4t 8t" |
GNOME's tracker is a CPU and privacy hog. There's a pretty good case as to why it's neither useful nor necessary here: http://lduros.net/posts/tracker-sucks-thanks-tracker/
After discovering it chowing 2 cores, I decided to go about disabling it.
Directories