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Commands using set (54)

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Reproduce test failure by running the test in loop

If you need to fix a randomly failing test (race condition), you need to run it until you get that hard-to-reproduce failure. Show Sample Output
This is sample output - yours may be different.
```
Test run starting...
...
SUCCESS
Test run starting...
...
FAILURE
```
-3

(set -e; while true; do TEST_COMMAND; done) | tee log

wipu · 2011-09-06 12:29:11 6
Power Supply Triggered Alert

Checks whether your power supply is still plugged in. If not it will trigger an alarm at maximum volume. Show Sample Output
This is sample output - yours may be different.
```
run this in a screen and unplug your headphones.
```
-3

check(){ power=$(acpi -a) ; if [[ $power == *on-line* ]] ; then echo "supply is on"; else echo "somebody is steeling your laptop"; amixer -c0 set Master 100+ unmute ; mpg123 nuclear-alarm.mp3 ; fi } ;while true; do check ; sleep 2 ; done

hoodie · 2011-12-10 13:42:52 5
sets volume via command line

this will increase the volume by 2 decibels on the pcm channel. the argument to -c is for which sound card to use, the arg after set is the channel (PCM, Master, etc.) and what to set by. related commands: amixer -c 0 set PCM 2dB- decrease volume by 2 decibels amixer -c 0 set PCM toggle toggle mute/unmute this is for alsa systems for mac os (and maybe other UNIX systems) osascript -e 'set Volume *' where * is any number (can have decimal points) between 0 and 10
This is sample output - yours may be different.
-4

amixer -c 0 set PCM 2dB+

Fate · 2009-02-22 22:06:46 6
Oracle: set column separator

set colsep "&TAB" -- for tab separator set colsep "|" -- for pipe separator etc...
This is sample output - yours may be different.
-5

set colsep "{char}"

ebah80 · 2011-04-05 10:48:48 5
< 1 2 3

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Rename files in batch

List the Sizes of Folders and Directories

I wanted an easy way to list out the sizes of directories and all of the contents of those directories recursively.

Rename all subtitles files with the same name of mp4 files in same folder

Use this command if you want to rename all subtitles for them to have the same name as the mp4 files. NOTE: The order of "ls -1 *.mp4" must match the order of "ls -1 *.srt", run the command bellow to make sure the *.srt files will really match the movies after run this command: paste -d:

Generate a playlist of all the files in the directory, newer first

I use this to generate a playlist with all the podcasts I listen to. Ordered from most recent to older.

Create QR codes from a URL.

QR codes are those funny square 2d bar codes that everyone seems to be pointing their smart phones at. Try the following... $ qrurl http://xkcd.com Then open qr.*.png in your favorite image viewer. Point your the bar code reader on your smart phone at the code, and you'll shortly be reading xkcd on your phone. URLs are not the only thing that can be encoded by QR codes... short texts (to around 2K) can be encoded this way, although this function doesn't do any URL encoding, so unless you want to do that by hand it won't be useful for that.

list files recursively by size

Print text string vertically, one character per line.

list block devices

Shows all block devices in a tree with descruptions of what they are.

uniq without pre-sorting

Reads stdin, and outputs each line only once - without sorting ahead of time. This does use more memory than your system's sort utility.

Convert (almost) any video file into webm format for online html5 streaming

If you're using the experimental vorbis encoder (homebrew version of libffmpeg)

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Commands using set (54)

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