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I sometimes have use an usb stick to distribute files to several standalone "internet" pc's. I don't trust these machines period. The sticks I have do not have a write protection. So as a added security measure I fill the unused space on the (small) usb stick with a file with randomly generated bits. Any malware that tries to write to this stick will find no space on it.
Tested on slackware 14
Note: you may need root access to write to the device. This depends on your mount options.
adjusts the 'Master' channel's volume up by 1dB.
Can use command 'amixer' to see other channels :
Simple mixer control 'Master',0
Simple mixer control 'Capture',0
Converts red-cyan 3D anaglyphs to side-by-side format viewable by crossing your eyes. Useful for people who don't have 3D glasses or prefer not to use one.
Replace "Master" with desired control name (e.g. Front, Earphone, PCM, etc.).
For if you want to use vi key bindings in the terminal
`multipath -ll` requires Device Mapper multipath.conf configuration. And of course, replace "3PARdata,VV" with your disk array's SCSI vendor,LUN name.
- GPT partition table allows you to create >2TB partitions
Enable tracing and print a timestamp before the command to be invoked.
Original author: Peter Eisentraut
Pros: Works in all Windows computers, most updated and compatible command.
Cons: 3 liner
Replace fcisolutions.com with your site name.
A tweak using Patola's code as a base, this full-width green matrix display has all the frills (and all the printable characters).
You don't need the surrounding parens if you don't care about losing globbing capabilities. Z-shell (/bin/zsh) needs neither the parens nor the `set -o noglob`
Screen shot (animated): http://desmond.imageshack.us/Himg32/scaled.php?server=32&filename=matrixh.gif&res=landing
If it's too slow, try lowering the `sleep 0.05` or even replacing it with `true` (which is faster than `sleep 0`).
I squashed it as narrow as I could to conserve space, though somebody could probably squeeze a char or two out.
Checks whether your power supply is still plugged in.
If not it will trigger an alarm at maximum volume.
Change Random Wallpaper on Gnome 3
If you need to fix a randomly failing test (race condition), you need to run it until you get that hard-to-reproduce failure.
Move efficiently between directories.
This command adds a couple of extra features to cd, without affecting normal use.
CDPATH use is also unaffected. It introduces and environment variable CDDIR which is used as an alternate home directory.
Note: I don't want to alter $HOME because then all my dot files will move.
Change directory to "dir" (using CDPATH if necessary)
Change directory to "dir" (containing folder of "file.txt")
This allows you to cut'n'paste, or use
CDDIR is unset
Change directory to $HOME
Change directory to /home/flatcap/work
For convenience, put the command, and the following, in your .bashrc or .bash_profile
set colsep "&TAB" -- for tab separator
set colsep "|" -- for pipe separator
Mutes the speakers after an hour, in case you fall asleep watching a video...
useful if you want to get the source code of a in memory function