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Switch to windows using gpicker

Require wmctrl and gpicker and an EWMH/NetWM compatible X Window Manager
This is sample output - yours may be different.
-1

wmctrl -i -a `wmctrl -l -x | gpicker -d "\n" -n "\n" - | awk '{print $1}'`

Iany · 2010-08-30 02:19:43 4
List of syscalls (for 32/64 bits systems)
This is sample output - yours may be different.
-1

egrep '__NR_' /usr/include/asm/unistd_`getconf -a | awk '$1~/^WORD/{print $2}'`.h | sed -e 's/^#define __NR_//' | column -t

cicatriz · 2011-03-04 15:09:40 6

retrieve GMT time from websites ( generally accruate )

w3m is a commanline web browser, full of options, I used -dump_head for less unnecessary page download. With awk, I can retrieve dynamic changes in webpages in this very econnomical fashion Show Sample Output

-1

w3m -dump_head www.fiat.com | awk '/Date+/{print $6, $7}'

m33600 · 2009-06-08 00:06:01 7

intersection between two files

print members both in file1 and file2
This is sample output - yours may be different.
-1

sort file1 file2 | uniq -d

emacs · 2010-05-28 10:25:31 6
Remove a line from a file using sed (useful for updating known SSH server keys when they change)

Easily removes line #2 in ~/.ssh/known_hosts. Show Sample Output
This is sample output - yours may be different.
-1

perl -p -i -e 's/.*\n//g if $.==2' ~/.ssh/known_hosts

meappy · 2012-01-17 14:11:03 3
List OSX applications and versions.

Uses find, plutil and xpath. Note: Some applications don't have proper information. system_profiler might be better to use. It's a bit slow query. Due to command length limit, I removed -name "*.app" and CFBundleName. Show Sample Output
This is sample output - yours may be different.
```
/Applications/CheatSheet.app
v1.0.3
/Applications/Chess.app
v3.0
```
-1

find /Applications -type d -maxdepth 1 -exec sh -c 'echo "{}"; (plutil -convert xml1 -o - "{}/Contents/Info.plist" | xpath /dev/stdin "concat(\"v\", /plist/dict/string[preceding-sibling::key[1]=\"CFBundleShortVersionString\"]/node())" 2>/dev/null)' \;

darkfader · 2013-03-29 14:01:23 4
Compare a remote file with a local file

Or, if you have restricted access for sftp only, I think you can still do this: diff /path/to/localfile <(scp user@host:/path/to/remotefile >(cat))
This is sample output - yours may be different.
-1

diff /path/to/localfile <(ssh user@host cat /path/to/remotefile)

mc0e · 2013-05-24 09:24:31 8
Add cover-art to mp3 tags
This is sample output - yours may be different.
-1

eyeD3 --add-image=coverart.jpg:FRONT_COVER musicfile.mp3

munter · 2013-08-17 22:35:54 8
get size of a file
This is sample output - yours may be different.
-1

du -hs file-name

bharat · 2014-05-09 07:22:53 7
Get a text on a position on the file and store in a variable
This is sample output - yours may be different.
-1

TIMEUNIT=$(awk '/timescale/{print NR}' a)

arcege · 2009-10-28 12:12:37 3
Match a URL

don't have to be that complicated
This is sample output - yours may be different.
-1

cho "(Something like http://foo.com/blah_blah)" | awk '{for(i=1;i<=NF;i++){if($i~/^(http|ftp):\/\//)print $i}}'

unixmonkey7109 · 2009-11-28 03:31:41 6
Recursively remove .svn directories

man find: If no paths are given, the current directory is used. - Can anybody tell me why so many people are typing the dot?
This is sample output - yours may be different.
-1

find -type d -name ".svn" -print0 | xargs -0 rm -rf

tuxilicious · 2010-02-25 10:16:18 6
encode a text to url_encoded format
This is sample output - yours may be different.
-1

groovy -e 'println URLEncoder.encode("Some text")'

yababay · 2010-08-30 16:04:29 4
display mean response time of intermediates to a specified host

mtr is a network utility that combines traceroute and ping utility
This is sample output - yours may be different.
-1

mtr -c 50 -r example.com

ohe · 2015-08-05 07:18:52 10
command to display info about the core specified

Display information about the cores. * sudo apt-get install schedtool Show Sample Output
This is sample output - yours may be different.
```
PID     1: PRIO   0, POLICY N: SCHED_NORMAL  , NICE   0, AFFINITY 0x1
```
-1

schedtool 1

terminalhacker · 2009-08-06 08:42:03 3
Create .tar file on Mac OS X Leopard / Snow Leopard without ._* files

Using the COPYFILE_DISABLE=true environment variable you can prevent tar from adding any ._-files to your .tar-file on Mac OS X.
This is sample output - yours may be different.
-1

COPYFILE_DISABLE=true tar cvf newTarFile.tar Directory/

alainkaa · 2010-07-01 09:36:48 3
Get full directory path of a script regardless of where it is run from

work for execute file
This is sample output - yours may be different.
-1

dirname $(readlink -f ${BASH_SOURCE[0]})

unixyangg · 2011-12-02 16:10:38 3
Avoid using seq and pad numbers with leading zeros

zsh only I always hated resorting to using $(seq -w 1 99) to pad numbers. zsh provides a shortcut that couldn't be more intuitive. It also works in reverse {99..01} Show Sample Output
This is sample output - yours may be different.
```
001
002
...
998
999
```
-1

for i in {001..999}; print $i

karld · 2009-02-16 23:03:53 7
Random unsigned integer

Grab 4 bytes from www.random.org over ssl and format them as an integer
This is sample output - yours may be different.
-1

curl -s "https://www.random.org/cgi-bin/randbyte?nbytes=4" | od -DAn

PhillipNordwall · 2010-11-09 18:26:24 4
find php files even without extension

needs grep what supports '--recursive' Show Sample Output
This is sample output - yours may be different.
```
./CustomFields/add-avatars.php
./examples/example-widget.php
./examples/multiwidget.php
./examples/Recent_Comments.php
./examples/Recent_Posts.php
```
-1

grep -Ilr "<?php" .

mitry · 2011-10-23 05:11:53 3
Get your external IP address
This is sample output - yours may be different.
-1

html2text http://checkip.dyndns.org | grep -i 'Current IP Address:'|cut -c21-36

tkoopa · 2009-08-06 10:29:02 4
speak a chat log file while it's running

like #9295, but awkish instead of perlish
This is sample output - yours may be different.
-1

tail -f LOGFILE | awk '{system("say \"" $0 "\"");}'

tamouse · 2011-09-16 06:20:06 9
tar the current directory wihtout the absolute path

should do the same as command #12875, just shorter.
This is sample output - yours may be different.
-1

tar -cf "../${PWD##*/}.tar" .

joedhon · 2013-11-06 11:15:38 9
See crontabs for all users that have one

This is not exhaustive but after checking /etc/cron* is a good way to see if there are any other jobs any users may have set. Note: this is a repost from a comment "flatcap" made on http://www.commandlinefu.com/commands/view/3726/print-crontab-entries-for-all-the-users-that-actually-have-a-crontab#comment, for which I am grateful and I take no credit.
This is sample output - yours may be different.
-1

for USER in /var/spool/cron/*; do echo "--- crontab for $USER ---"; cat "$USER"; done

tyzbit · 2014-12-11 19:48:46 15
Load multiple sql script in mysql

Be aware of using the --password argument as it will appear your password in plain text on the screen. You may use -p argument instead, it will prompt you to enter you password in hidden mode.
This is sample output - yours may be different.
-1

cat schema.sql data.sql test_data.sql | mysql -u user --password=pass dbname

tristan_ph · 2009-03-24 08:39:40 6
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continuously check size of files or directories

very handy if you copy or download a/some file(s) and want to know how big it is at the moment

Colour part of your prompt red to indicate an error

If the return code from the last command was greater than zero, colour part of your prompt red. The commands give a prompt like this: [user current_directory]$ After an error, the "[user" part is automatically coloured red. Tested using bash on xterm and terminal. Place in your .bashrc or .bash_profile.

One-liner to generate Self-Signed SSL Certificate+Key without any annoying prompts or CSRs

Handy if you want to quickly generate a self-signed certificate. Also can be used in your automated scripts for generating quick-use certificates.

Edit 2 or more files in vim using vim -d

Use vim's diff mode to edit two or more files in one window. The '+diffoff!' turns off diff highlighting when the session is started. Use ctrl+w + ctrl+w to switch between windows.

Create a mirror of a local folder, on a remote server

Create a exact mirror of the local folder "/root/files", on remote server 'remote_server' using SSH command (listening on port 22) (all files & folders on destination server/folder will be deleted)

Factorial With Case

Computes factorials.

Use Linux coding style in C program

put "-linux" option into $HOME/.indent.pro to make it default

Download a new release of a program that you already have very quickly

Zsync is an implementation of rsync over HTTP that allows updating of files from a remote Web server without requiring a full download. For example, if you already have a Debian alpha, beta or RC copy downloaded, zsync can just download the updated bits of the new release of the file from the server. This requires the distributor of the file to have created a zsync build control file (using zsyncmake).

Buffer in order to avoir mistakes with redirections that empty your files

A common mistake in Bash is to write command-line where there's command a reading a file and whose result is redirected to that file. It can be easily avoided because of : 1) warnings "-bash: file.txt: cannot overwrite existing file" 2) options (often "-i") that let the command directly modify the file but I like to have that small function that does the trick by waiting for the first command to end before trying to write into the file. Lots of things could probably done in a better way, if you know one...

Get acurate memory usage of a Process in MegaBytes

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