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Kills all processes for a certain program
This is sample output - yours may be different.
-2

kill -9 $(pidof process)

luisuribe · 2009-03-23 17:07:55 8
Find files and list them sorted by modification time

Here's a version that doesn't use find.
This is sample output - yours may be different.
-2

ls -rl --time-style=+%s * | sed '/^$/,/^total [0-9]*$/d' | sort -nk6

putnamhill · 2010-05-27 19:14:12 4
how to Disable a guest user from the login panel Xubuntu

This command will disable a guest user logon, this user don't have password to login in the system. Show Sample Output
This is sample output - yours may be different.
```
sh -c 'printf "[SeatDefaults]\nallow-guest=false\n" >/usr/share/lightdm/lightdm.conf.d/50-no-guest.conf'
sh -c 'printf "[SeatDefaults]\nallow-guest=false\n" >/usr/share/lightdm/lightdm.conf.d/50-guest-wrapper.conf'
```
-2

sudo sh -c 'printf "[SeatDefaults]\nallow-guest=false\n" >/usr/share/lightdm/lightdm.conf.d/50-no-guest.conf'; sudo sh -c 'printf "[SeatDefaults]\nallow-guest=false\n" >/usr/share/lightdm/lightdm.conf.d/50-guest-wrapper.conf'

andregyn62 · 2015-08-31 18:12:21 12
Show directories in the PATH, one per line

Removes trailing newline; colon becomes record separator and newline becomes field separator, only the first field is ever printed. Replaces empty entries with $PWD. Also prepend relative directories (like ".") with the current directory ($PWD). Can change PWD with env(1) to get tricky in (non-Bourne) scripts. Show Sample Output
This is sample output - yours may be different.
```
/tmp/src
/tmp
/usr/java/jdk1.6.0_11/bin
/home/arcege/local/bin
/home/arcege/bin
/usr/local/sbin
/usr/local/bin
/usr/sbin
/usr/bin
/sbin
/bin
/usr/games
/opt/real/RealPlayer
/tmp/.
/usr/java/apache-ant-1.7.0/bin
```
-2

echo src::${PATH} | awk 'BEGIN{pwd=ENVIRON["PWD"];RS=":";FS="\n"}!$1{$1=pwd}$1!~/^\//{$1=pwd"/"$1}{print $1}'

arcege · 2009-09-09 04:03:46 3
Convert all the symbolic links in $PWD to copies of the referenced files
This is sample output - yours may be different.
-2

for FILE in `ls -1`; do if [ -L "$FILE" ]; then cp $(readlink "$FILE") ${FILE}_rf; rm -f $FILE; mv ${FILE}_rf "$FILE"; fi; done

unixmonkey1907 · 2012-01-16 16:39:41 6
reset the bizzarre gone junk terminal to normal
This is sample output - yours may be different.
-2

echo "Xc" | tr "Xo" "\033\017

mnikhil · 2009-02-07 18:55:27 9
Cleanly quit KDE4 apps

KDE4 is great, but still a bit buggy, and sometimes plasma requires to be restarted. Instead of quitting it with "killall plasma", which might loose your preferences (widgets, etc.), kquitapp will cleanly quit it. Tip: you can type this in the "Alt+F2" window, and then type "plasma" in Alt+F2 again to restart plasma (be patient though...).
This is sample output - yours may be different.
-2

kquitapp plasma

raphink · 2009-02-16 21:27:16 8
Replace spaces with tabs & format file source recursuvely within a directory

The sample command searches for PHP files replacing tabs with spaces. -u NONE # don't use vimrc Instead of retab! one may pass retab! 4 for instance. Look at this http://susepaste.org/69028693 also
This is sample output - yours may be different.
-2

find $DIR -name *.php -exec vim -u NONE -c 'set ft=php' -c 'set shiftwidth=4' -c 'set tabstop=4' -c 'set noexpandtab!' -c 'set noet' -c 'retab!' -c 'bufdo! "execute normal gg=G"' -c wq {} \;

ruslan · 2011-04-08 11:42:45 4
Delete all empty lines from a file with vim

Here's the other way of doing it in vim: setting a recursive macro. 'gg' brings you to the top of the buffer, 'qqq' clears the 'q' macro, 'qq' starts recording a macro called 'q', '/^$' moves the cursor to the next empty line, 'dd' deletes the line that the cursor is on, '@q' calls the 'q' macro (currently empty because of 'qqq'), and 'q' stops recording the macro. '@q' calls the macro. It will run until it cannot find another blank line, at which point it will throw up an error and cease. While this is longer than the regex, you can use it without having to move your thoughts from 'vim-mode' to 'regex-mode'.
This is sample output - yours may be different.
-2

ggqqqqq/^$dd@qq@q

evilsoup · 2013-08-16 20:37:44 8
color grep with specification of colors with GREP_COLOR env variable
This is sample output - yours may be different.
-2

setenv GREP_COLOR '1;37;41'

mnikhil · 2009-02-07 18:56:23 10
Recursively deletes DIR directories

You can use this command to delete CVS/svn folders on given project.
This is sample output - yours may be different.
-2

find . -type d -name DIR -print0 | xargs -r0 rm -r

miguelbaldi · 2009-03-04 14:49:21 7
Find all uses of PHP constants in a set of files
This is sample output - yours may be different.
-2

$class=ExampleClass; $path=src; for constant in `grep ' const ' $class.php | awk '{print $2;}'`; do grep -r "$class::$constant" $path; done

BluesDragon · 2009-12-24 11:32:24 4
commit message generator - whatthecommit.com

#Sample Usage: # git commit -m"Jira #404 - `whatthecommit`" # Show Sample Output
This is sample output - yours may be different.
```
No changes made
```
-2

curl -s http://whatthecommit.com/ | tr -s '\n' ' ' | grep -so 'p>$.*$</p' | sed -n 's/..$.*$..../\1/p'

sragu · 2010-08-02 03:20:32 3
Get external IP address (supports IPv4 and IPv6)

ip.telize.com (Listen on both IPv4 and IPv6) ip4.telize.com (Listen on IPv4 only) ip6.telize.com (Listen on IPv6 only) More information on : http://www.telize.com
This is sample output - yours may be different.
-2

curl ip.telize.com

fcambus · 2014-02-04 12:25:52 7
Muestra el crecimiento de un archivo por segundo

Muestra el crecimiento de un archivo por segundo. Cambia el texto "FILE" por el nombre del archivo a monitorear. Comando STAT
This is sample output - yours may be different.
-2

while true; do A=$(stat -c%s FILE); sleep 1; B=$(stat -c%s FILE); echo -en "\r"$(($B-$A))" Bps"; done

Zort · 2016-06-27 20:39:06 15
Update many subversion projects which reside in one directory

If you have a directory with many working copies of various subversion projects and you want to update them all at once, this one may be for you. Show Sample Output
This is sample output - yours may be different.
```
Authentication realm: <https://foo.com:443> foo-project
Password for 'foodoo': 
At revision 221.
```
-2

for d in $(find . -maxdepth 1 -type d -name '[^.]*'); do cd "$d"; svn up; cd ..; done

udog · 2010-05-28 10:09:19 3
Identify files uniquly in a FS with inode numer
This is sample output - yours may be different.
-2

ls -i1 filename

totti · 2011-09-15 19:42:40 4
irssi log histogram

This awk command prints a histogram of the number of times 'emergency' is the first word in a line, per day, in an irssi (IRC client) log file. Show Sample Output
This is sample output - yours may be different.
```
2009-Jun-25 **
2009-Jun-26 ***
2009-Jun-27 
2009-Jun-28 *
2009-Jun-29 *
2009-Jun-30 *
2009-Jul-01 
2009-Jul-02 *
2009-Jul-03 
2009-Jul-04 
2009-Jul-05 
2009-Jul-06 ***
2009-Jul-07 *****
2009-Jul-08 ***
2009-Jul-09 ***
2009-Jul-10 *****
2009-Jul-11 
2009-Jul-12 
2009-Jul-13 **
2009-Jul-14 *****
2009-Jul-15 
2009-Jul-16 
2009-Jul-17 *
2009-Jul-18 *
2009-Jul-19 *
2009-Jul-20 ****
2009-Jul-21 *
2009-Jul-22 ***
2009-Jul-24 **
2009-Jul-25 **
```
-2

awk '/^--- Day changed (.*)/ {st=""; for (i=0;i<ar[date];i++) {st=st"*"} print date" "st; date=$7"-"$5"-"$6} /> emergency/ {ar[date]++} END {st=""; for (i=0;i<ar[date];i++) {st=st"*"}; print date" "st}' #engineyard.log

MarcoN · 2010-02-24 23:10:03 3
Function to remove a password from a PDF

You should install qpdf. That way, you can have a copy without any password required.
This is sample output - yours may be different.
-2

passpdf(){ for i; do qpdf --password=<YOUR PASSWD> --decrypt "$i" "new$i"; done; }

sputnick · 2010-02-25 01:21:00 4
Buscar archivos con la extension mp3 y mostrar el conteo de resultados
This is sample output - yours may be different.
-2

find -D rates . -name "*.mp3" -type f

Khreez · 2010-03-28 23:19:53 3
jump to home dir and list all, not older than 3 days, with full-path, hidden/non-hidden files/subdirectories

Number of days back: change/append arbitrary amount of '\|'$[$(date +%Y%j)-x] expressions or specify any n-th day before today for a single day (you have to replace x with 3, 4, 5, whatever ... above I replaced it with 1 and 2 to get listing for yesterday and day before yesterday and 0 for today was not necessary, so left out). Q: How to narrow to *.pdf , *.png, *.jpg, *.txt, *.doc, *.sh or any type of files only? A: Pipe to grep at the end of command. Even shorter: cd && day=3;for a in $(seq $day -1 0);do tree -aicfnF --timefmt %Y%j-%d-%b-%y|grep $[$(date +%Y%j)-$a];done Here it's only needed to change amount of variable day to list period of days back - here is set to three days back (the seq command is adjusted for listing the oldest stuff first). Show Sample Output
This is sample output - yours may be different.
```
[2019215-03-Aug-19]  ./.config/session/
[2019215-03-Aug-19]  ./.config/session/konsole_2b5b0f704-9942-428b-a3d8-8054efd32b18_1564837706_57870
[2019215-03-Aug-19]  ./.config/session/konsole_23e1f9567-a8ff-42ad-a879-76f7bafb56c3_1564840981_89854
[2019215-03-Aug-19]  ./.config/session/konsole_2e2aea661-fd41-4510-b0b9-1d2c69ef99c7_1564864156_611707
[2019215-03-Aug-19]  ./.config/konsolerc
[2019216-04-Aug-19]  ./.config/dconf/
[2019216-04-Aug-19]  ./.config/dconf/user
[2019216-04-Aug-19]  ./.config/briši_me.pdf
```
-2

cd && tree -aicfnF --timefmt %Y%j-%d-%b-%y|grep $(date +%Y%j)'\|'$[$(date +%Y%j)-1]'\|'$[$(date +%Y%j)-2]

knoppix5 · 2019-08-04 02:22:24 61
Monitor ETA using pv command

You can get an approximate idea of how long your data export might take. Show Sample Output
This is sample output - yours may be different.
```
[==================================>  ] 60% ETA 0:00:01
```
-2

mysqldump --login-path=mypath sbtest sbtest4 | pv --progress --size 200m -t -e -r -a > dump.sql

shantanuo · 2020-03-30 09:15:16 135
Read multiple lines of a file based on regex matching a single line

Finds the line number matching the regex, then passes that to BC for some math, passes that to head, and uses tail to trim off the unwanted section at the top. The whole thing is spit out to a script that can then be shared or run. Comes in handy for reading select sections from error logs.
This is sample output - yours may be different.
-2

for i in `grep -n "SomeRegEx" foo.txt | sed 's/:/ /' | awk '{print $1}'`; do echo "head -n `echo "$i+4" | bc` foo.txt | tail -n 5"; done > headsandtails.sh

reklis · 2010-07-01 05:48:02 5
Randomize GNU grep's color

Randomize GNU grep's colors 31-36 excluding black and white.
This is sample output - yours may be different.
-2

cgrep() { GREP_COLOR="1;3$((RANDOM%6+1))" grep --color=always "$@" }

derekschrock · 2011-03-04 18:45:58 9
Sum some columns on one line in a csv file.

For all lines, sum the columns following the first one, and then print the first column plus the sum of all the other columns. example input: 1,2,3,4,5 2,2,3,4,5 becomes 1,14 2,14
This is sample output - yours may be different.
-2

perl -ne '@a=split(/,/); $b=0; foreach $r (1..$#a){ $b+=$a[$r] } print "$a[0],$b\n"' -f file.csv

miniker84 · 2015-09-04 21:05:56 20
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Get all upgradable deb packages in a single line

Works for debian and ubuntu based distros.

find all file larger than 500M

Syntax Highlight your Perl code

This uses Text::Highlight to output the specified Perl file with syntax highlighting. A better alternative is my App::perlhl - find it on the CPAN: http://p3rl.org/App::perlhl

ssh autocomplete

Add to your bash profile to minimize carpal tunnel syndrome. Doesn't work with user@hostname but appending "-l user" works fine if needed. Works for ping as well.. complete -W "$(echo `cat ~/.ssh/known_hosts | cut -f 1 -d ' ' | sed -e s/,.*//g | uniq | grep -v "\["`;)" ping

Find the package that installed a command

Query ip pools based on successive netnames via whois

Useful if you f.i. want to block/allow all connections from a certain provider which uses successive netnames for his ip blocks. In this example I used the german Deutsche Telekom which has DTAG-DIAL followed by a number as netname for the dial in pools. There are - as always ;) - different ways to do this. If you have seq available you can use $ net=DTAG-DIAL ; for i in `seq 1 30`; do whois -h whois.ripe.net $net$i | grep '^inetnum:' | sed "s;^.*:;$net$i;" ; done or without seq you can use bash brace expansion $ net=DTAG-DIAL ; for i in {1..30}; do whois -h whois.ripe.net $net$i | grep '^inetnum:' | sed "s;^.*:;$net$i;" ; done or if you like while better than for use something like $ net=DTAG-DIAL ; i=1 ; while true ; do whois -h whois.ripe.net $net$i | grep '^inetnum:' | sed "s;^.*:;$net$i;" ; test $i = 30 && break ; i=$(expr $i + 1) ; done and so on.

Rename files in batch

Find non-standard files in mysql data directory

These files should be removed to keep the size of data directory under control. If you exclude the known important file types like frm and MYD then what-ever is left can be either moved or deleted.

Extract track 9 from a CD

Using mplayer to extract audio file from a CD

list all file-types (case-insensitive extensions) including subdirectories

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