Commands using export sorted by votes

Commands using export (101)

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Unlock your KDE4 session over SSH

So this first obtains address of the DBUS session, as it's not available by default over SSH. Then it tells plasma-overlay to exit. `kquitapp` is pretty much an equivalent of the qdbus calls.
This is sample output - yours may be different.
0

( eval $(grep -z '^DBUS_SESSION_BUS_ADDRESS' /proc/$(pgrep -u $USER plasma-overlay)/environ); export DBUS_SESSION_BUS_ADDRESS; kquitapp plasma-overlay )

mig_hg · 2014-09-01 12:49:58 9
Don't track history for the current session starting after the command

Yo run the `nohist` command and after that the commands won't get stored in the history file for the current session. This makes no permanent changes.
This is sample output - yours may be different.
0

nohist(){ export HISTFILE=/dev/null; }

ivanalejandro0 · 2014-12-31 22:30:08 11
Turn monitor on or off if off or on, respectively

that's how I do it in ubuntu
This is sample output - yours may be different.
0

echo test $DISPLAY > /dev/null || export DISPLAY=:0.0; xset dpms force off;gnome-screensaver-command -l

gargolito · 2015-04-07 19:12:45 9
tsv file to json file

Need to change values of 'field 1'...'field 3' to column names. input_file.tsv is the tab file you want to conver output_file.json is the file that is created with the json output. Assumes your tsv has no headers.
This is sample output - yours may be different.
0

export FIELDS=field_1,field_2,field_3; cat input_file.tsv| ruby -rjson -ne 'puts ENV["FIELDS"].split(",").zip($_.strip.split("\t")).inject({}){|h,x| h[x[0]]=x[1];h}.to_json' > output_file.json

prees · 2015-07-24 15:00:34 9
Set Java home directory based on version for Mac OSX Yosemite

Useful if you have multiple versions of Java installed. The 1.7 pkg for Mac doesn't tell you anything about where it's putting stuff. Show Sample Output
This is sample output - yours may be different.
```
aperture:Resources aaronr$ echo $JAVA_HOME
/Library/Java/JavaVirtualMachines/jdk1.7.0_79.jdk/Contents/Home
```
0

export JAVA_HOME=$(/usr/libexec/java_home -v 1.7)

robinsonaarond · 2015-07-30 18:50:51 9
Dialog customization WITHOUT configuration file

e.g. OLDDIALOGRC=$DIALOGRC; export DIALOGRC=/dev/stdin; echo -e "screen_color = (CYAN,RED,ON)" | dialog --infobox "\nfoo bar" 5 11; export DIALOGRC=$OLDDIALOGRC Alternative: OLDDIALOGRC=$DIALOGRC; export DIALOGRC=/dev/stdin; printf "<configuration>\n" | dialog <options>; export DIALOGRC=$OLDDIALOGRC
This is sample output - yours may be different.
0

OLDDIALOGRC=$DIALOGRC; export DIALOGRC=/dev/stdin; echo -e "<configuration>" | dialog <options>; export DIALOGRC=$OLDDIALOGRC

rlebron · 2016-01-18 09:12:54 11
Cool PS1 with host, time, path and user. With color!

A simple PS1, ready to be used. Just paste in your ~/.bashrc Show Sample Output
This is sample output - yours may be different.
```
[user@host | /etc/network 13:36:54]$ (fields in different colors)
```
0

export PS1="[\[\e[1;32m\]\u\[\e[m\]\[\e[1;31m\]@\[\e[m\]\[\e[3;35m\]\H\[\e[m\] \[\e[1;30m\]| \[\e[m\]\[\e[1;34m\]\w\[\e[m\] \[\e[1;29m\]\t\[\e[m\]]\[\e[1;33m\]$\[\e[m\]"

thelaser · 2017-03-24 14:21:20 15
Set the date on one remove server to the date of another remote server

From a local node, retrieve the date from server A and set that time on server B. When ntpd is not an option and you need to get closest clock sync between two nodes Replace SRC_SRV with yout source server and DST_SRV with your destination server. You must have ssh access to both and sudo access to the the destination to set the date. Show Sample Output
This is sample output - yours may be different.
```
Wed Sep  6 15:10:17 UTC 2017
Wed Sep  6 15:03:43 UTC 2017
Wed Sep  6 15:03:43 UTC 2017
```
0

env TERM="$(ssh SRC_SRV "date"):TERM" ssh -t DST_SRV 'TS=${TERM%:*}; TERM=${TERM##*:}; export TS; date ; sudo date -s "$TS"; date'

sector6 · 2017-09-06 15:28:26 21
This commands create an alias for you to help you navigating in the shell easier.

This command is named "rope" since it ties a rope in the directory you are in... so when you go to other directories you can type "rope" again and you will get back to tied directory... it helps a lot when you forget to execute a command in other directories, so you can go, do what you want, and return to the directory to complete what you now want to do. NOTE: add this command to the end of ".bashrc" file found in your home directory and the alias will be permanent
This is sample output - yours may be different.
0

alias rope='if [[ "$i" == "0" ]]; then cd $dir; i=1; else dir=$(pwd); export dir; i=0; fi'

Stricker777 · 2018-01-14 03:19:06 22
Day Date Time> Instead of $ or # at the terminal
This is sample output - yours may be different.
-1

export PS1='\D{%a %D %T}> '

hemanth · 2009-08-22 08:07:47 4
Better PS aliases

#ps aliases PSO='user,pid,ppid,%cpu,%mem,time,start,state,command' PSOA='user,pid,time,state,command' PSOL='user,pid,ppid,%cpu,%mem,nice,pri,etime,time,tt,state,ucomm' export PSO PSOA PSOL function _ps { /bin/ps $@ ; } alias ps='_ps ax -o $PSO' alias psa='_ps ax -o $PSOA' alias psl='_ps ax -o $PSOL' alias psm='_ps -U $USER -o $PSOA'
This is sample output - yours may be different.
-1

export PSOA='user,pid,time,state,command' ; function _ps { /bin/ps $@ ; } ; alias psa='_ps ax -o $PSOA'

mattmartini · 2010-05-27 02:07:56 3
one line command to recursively add all jar files in current folder to java class path

a pretty simple script when running java programs from command line Show Sample Output
This is sample output - yours may be different.
```
.:/home/hyhu/Ubuntu One/javalibs/a.jar:/home/hyhu/Ubuntu One/javalibs/b.jar:/home/hyhu/Ubuntu One/javalibs/c.jar:/home/hyhu/Ubuntu 
```
-1

CLASSPATH=.; export CLASSPATH=$CLASSPATH$(find "$PWD" -name '*.jar' -type f -printf ':%p\n' | sort -u | tr -d '\n'); echo $CLASSPATH

dexterhu · 2011-03-11 19:21:15 3
recursively add all sub folders with executable file of current folder to PATH environment variable

(1) don't run twice, or the same folder will occur in $PATH. (2) otherwise you need to start a new terminal Show Sample Output
This is sample output - yours may be different.
```
blah blah blah ..... (too long)
```
-1

export PATH=$PATH$(find "$PWD" -name '.*' -prune -o -type f -a -perm /u+x -printf ':%h\n' | sort -u | tr -d '\n'); echo $PATH

dexterhu · 2011-03-11 19:31:17 7
Windows person acting like an idiot in Linux?

Is there somebody that uses Windows a lot that keeps messing up your Linux machine? Press Ctrl+Alt+F1-F6 and run this command after logging into a text shell!
This is sample output - yours may be different.
-1

export PS1="C:\\>"; clear

ThePCKid · 2011-06-18 17:52:42 5
Show internet IP Address in prompt --> PS1 var
This is sample output - yours may be different.
-1

export PS1="[\u@`curl icanhazip.com` \W]$ "

peshay · 2011-11-07 14:48:16 7
Store Host IP in variable
This is sample output - yours may be different.
-1

export IP="$(hostname -I | awk '{print $1}')"

wuseman1 · 2021-08-10 03:48:21 221
Colour part of your prompt red to indicate an error
This is sample output - yours may be different.
-2

export PS1='[\[\e[36;1m\]\u@\[\e[32;1m\]\h \[\e[31;1m\]\w]# \[\e[0m\]'

bakhru · 2011-04-16 00:58:51 5
Find out local DISPLAY number

Not always does Xorg run on :0. For times like those, this script allows you to find out which it is.
This is sample output - yours may be different.
-2

export DISPLAY=$(tr '\000' '\n' < /proc/`pidof Xorg`/cmdline | egrep '^:[0-9]+')

oernii2 · 2012-12-18 07:26:16 6
Remote Screenshot

Like the given command, but combines _DISPLAY=":0.0"_ with _export DISPLAY_ to get _export DISPLAY=":0.0"_ and only imports if DISPLAY is set successfully.
This is sample output - yours may be different.
-3

export DISPLAY=":0.0" && import -window root screenshot.png

fraktil · 2010-02-17 12:13:49 3
Append current directory to $PATH temporarily.

This will temporarily add the current directory to your $PATH. Allowing you to execute from that directory for the duration of the session.
This is sample output - yours may be different.
-3

export PATH=$PATH:`pwd`

YogiBare · 2011-02-05 06:29:54 6
change your PS1 to look better :)

changes the PS1 to something better than default. [username.hostname.last-2-digits-of-ip] (current directory) Show Sample Output
This is sample output - yours may be different.
```
[simardd.b-vmesx2.build.201.23] (/home/simardd):
```
-4

newhostname=$(hostname | awk -F. '{print $1 "." $2}'); ipaddress=$(nslookup `hostname` | grep -i address | awk -F" " '{print $2}' | awk -F. '{print $3 "." $4}' | grep -v 64.142);PS1="[`id -un`.$newhostname.$ipaddress]"' (${PWD}): '; export PS1

simardd · 2009-02-16 20:11:53 8
Reports size of all folders in the current folder. Useful when burning CD's and DVD's
This is sample output - yours may be different.
-4

export IFS=$'\n';for dir in $( ls -l | grep ^d | cut -c 52-);do du -sh $dir; done

whatshisname · 2009-02-28 20:30:15 5
Export you history to nowhere

This command is great for dumping your history so that when you're working on a system that is under a shared account, you can keep others from reviewing your history file. I use this when I'm just visiting a system to diagnose a problem, or to make a quick fix.
This is sample output - yours may be different.
-4

export HISTFILE=/dev/null/

thund3rpants · 2010-06-10 18:48:43 7
Kill process you don't know the PID of, when pidof and pgrep are not available.

This will kill a specific process you don't know the PID of, when pidof and pgrep are not available, for example on OS X. var1 is created so that the whitespace can be trimmed before passing off to kill. Show Sample Output
This is sample output - yours may be different.
```
n/a
```
-5

export var1=`ps -A | grep '[u]nique' | cut -d '?' -f 1`; echo${var1/ /}; kill -9 $var1

headyadmin · 2010-03-22 21:06:58 5
Add a folder to PATH

only during session
This is sample output - yours may be different.
-5

export PATH=$PATH:/home/user/my_prog

sentenza · 2014-11-04 20:50:19 7
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list block devices

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

printing barcodes

64 elements max on 16 rows, 4 cols. GNU Barcode will adapt automagically the width and the eight of your elements to fill the page. Standard output format is PostScript.

Trim png files in a folder

That should be a short as it can get.

Factorial With Case

Computes factorials.

nagios wrapper for any script/cron etc

use w/ check_freshness. passes the last line of output and exit code to nagios via nsca

Remove invalid key from the known_hosts file for the IP address of a host

Quick shortcut if you know the hostname and want to save yourself one step for looking up the IP address separately.

Capture video of a linux desktop

This will grab the image from desktop, starting with the upper-left corner at x=100, y=200 with a width and height of 1024?768.

Quickly re-execute a recent command in bash

! will expand to the last time you ran , options and all. It's a nicer alternative to ^R for simple cases, and it's quite helpful for those long commands you run every now and then and haven't made aliases or functions for. It's similar to command 3966, in some sense.

Outputs files with ascii art in the intended form.

Files containing ascii art (e.g. with .nfo extension) are typically not correctly reproduced at the command line when using cat. With iconv one can easily write a wrapper to solve this: $ #!/bin/bash $ if [ -z "$@" ]; then echo "Usage: $(basename $0) file [file] ..." $ else iconv -f437 -tutf8 "$@"; fi $ exit 0

escape any command aliases

e.g. if rm is aliased for 'rm -i', you can escape the alias by prepending a backslash: rm [file] # WILL prompt for confirmation per the alias \rm [file] # will NOT prompt for confirmation per the default behavior of the command

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Commands using export (101)

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