Commands using shift sorted by votes

Commands using shift (7)

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Randomly run command

Randomly decide whether to run a command, or fail. It's useful for testing purposes. . Usage: ran PERCENTAGE COMMAND [ARGS] Note: In this version the percentage is required. . This is like @sesom42 and @snipertyler's commands but in a USABLE form. . e.g. In your complicated shell script, put "ran 99" before a crucial component. Now, it will fail 1% of the time allowing you to test the failure code-path. ran 99 my_complex_program arg1 arg2 Show Sample Output
This is sample output - yours may be different.
```
$ ran 50 echo hello; echo $?
hello
0
$ ran 50 echo hello; echo $?
1
```
5

ran() { [ $((RANDOM%100)) -lt "$1" ] && shift && "$@"; }

flatcap · 2015-07-16 13:32:45 30
Joins args together using the first arg as glue
This is sample output - yours may be different.
3

joinargs() { (IFS="$1"; shift && echo "$*") }

BobbyTables · 2010-10-02 06:41:40 6
Speed up builds and scripts, remove duplicate entries in $PATH. Users scripts are oftern bad: PATH=/apath:$PATH type of thing cause diplicate.

Thanks to the authors of: awk '!x[$0]++' <file> and the author of: joinargs() { (local IFS="$1"; shift && echo "$*") } and others, we can have a fast Linux or android. IMPORTANT if you find a priority order problem in PATH you can push a path directory to the front without duplication as follows: PATH=/bin:$PATH then ... Check duplication with: echo $PATH|tr : '\n'|sort|uniq -d Finally do a very neat line by line list of $PATH: echo "${PATH//:/$'\n'} The speed up is very noticeable for android, and builds on Linux Ubantu are much faster with make and scripts. I will update the command on request. Timothy from SONY
This is sample output - yours may be different.
2

glu() { (local IFS="$1"; shift && echo "$*") }; repath() { ( _E=`echo "${PATH//:/$'\n'}" | awk '!x[$0]++'`; glu ":" $_E ) ; } ; PATH=`repath` ; export PATH

Timothy · 2011-06-09 12:11:18 4
Yet Another Rename (bash function)

Implementation of `rename` for systems on which I don't have access to it. Show Sample Output
This is sample output - yours may be different.
```
> ls 
text1.txt
text2.txt
> rename txt new.txt *txt
> ls
text1.new.txt
text2.new.txt
```
2

rename(){ txtToReplace=${1} ; replacementTxt=${2} ; shift 2 ; files=${@} ; for file in $files ; do mv ${file} ${file/${txtToReplace}/${replacementTxt}} ; done ; }

thebillywayne · 2012-10-03 17:03:29 5
Define dettaching commands in bashrc

Define commands that you always invoke with an appended '&disown'. In the example: gvim foo.txt will open gvim dettached from the current terminal.
This is sample output - yours may be different.
0

__disown(){ local cmd=$1 ; shift ; $cmd "$@" &> /dev/null &disown }; for i in gvim ; do alias $i="__disown $i"; done

smolav · 2010-07-07 20:46:45 6
for all who don't have the watch command

allows command to use switches
This is sample output - yours may be different.
0

watch() { if [ -z "$1" ]; then echo "usage: watch interval command" return fi sec=$1 shift while test :; do clear; date=$(date); echo -e "Every "$sec"s: $@ \t\t\t\t $date"; echo $@; sleep $sec; done }

kneufeld · 2012-02-29 17:10:19 4
Sudo like a sir

Show Sample Output
This is sample output - yours may be different.
```
$> can(){ shift 2; sudo "$@"; }
$> can i haz ls -la /root
. .. .bashrc
$> 
```
-5

can(){ shift 2; sudo "$@"; }

arcanis · 2012-06-22 13:23:57 7

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Generate random IP addresses

It never ends

Top 10 Memory Processes (reduced output to applications and %usage only)

get all Google ipv4/6 subnets for a iptables firewall for example (updated version)

google has added 2 more netblocks...

To have only unique lines in a file

Converts uppercase chars in a string to lowercase

Another alternative is to define a function: lower() { echo ${@,,} } lower StrinG

Clean your broken terminal

When some console full-screen program (minicom, vi, some installers) breaks down your terminal, try this command to revert all options to "sane" settings (sane is a built-in combo of a lot of stty options)

Sort output by column

(separator = $IFS)

Start dd and show progress every X seconds

Adjust "sleep X" to your needs. *NOTE: First sleep is required because bash doesn't have a "post-test" syntax (do XXX while).

Capture screen and mic input using FFmpeg and ALSA

Yet another x11grab using ffmpeg. I also added mic input to the capturing video stream using alsa. Yet I need to find out how to capture audio which is currently playing.

Detach a process from the current shell

Continue to execute the command in background even though quitting the shell.

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Commands using shift (7)

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