Commands using pidof sorted by votes

Commands using pidof (18)

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Check which files are opened by Firefox then sort by largest size.

Just refining last proposal for this check, showing awk power to make more complex math (instead /1024/1024, 2^20). We don't need declare variable before run lsof, because $(command) returns his output. Also, awk can perform filtering by regexp instead to call grep. I changed the 0.0000xxxx messy output, with a more readable form purging all fractional numbers and files less than 1 MB. Show Sample Output
This is sample output - yours may be different.
```
41 MB -- /home/tzk/.mozilla/firefox/default/urlclassifier3.sqlite
6 MB -- /home/tzk/.mozilla/firefox/default/places.sqlite
3 MB -- /home/tzk/.mozilla/firefox/default/XPC.mfasl
2 MB -- /home/tzk/.mozilla/firefox/default/extensions/writearea@writearea.com/chrome/writearea.jar
2 MB -- /home/tzk/.mozilla/firefox/default/extensions/writearea@writearea.com/chrome/writearea.jar
2 MB -- /home/tzk/.mozilla/firefox/default/extensions/{4BBDD651-70CF-4821-84F8-2B918CF89CA3}-trash/chrome/febe.jar
```
10

lsof -p $(pidof firefox) | awk '/.mozilla/ { s = int($7/(2^20)); if(s>0) print (s)" MB -- "$9 | "sort -rn" }'

tzk · 2010-01-13 22:45:53 5
exit if another instance is running
This is sample output - yours may be different.
8

pidof -x -o $$ ${0##*/} && exit

frans · 2009-11-20 12:58:41 5

Check which files are opened by Firefox then sort by largest size.

Check which files are opened by Firefox then sort by largest size (in MB). You can see all files opened by just replacing grep to "/". Useful if you'd like to debug and check which extensions or files are taking too much memory resources in Firefox. Show Sample Output

FFPID=$(pidof firefox-bin) && lsof -p $FFPID | awk '{ if($7>0) print ($7/1024/1024)" MB -- "$9; }' | grep ".mozilla" | sort -rn

josue · 2009-08-16 08:58:22 6

renice by name
This is sample output - yours may be different.
4

renice +5 -p $(pidof <process name>)

0x2142 · 2010-01-19 22:16:24 3
Display full tree information of a single process
This is sample output - yours may be different.
4

pstree -plants $(pidof -s firefox)

cbrchrt · 2018-09-04 12:22:57 132
list process ids for given program
This is sample output - yours may be different.
1

pidof httpd

lakelse · 2009-02-05 16:31:06 24
Get a process's pid by supplying its name
This is sample output - yours may be different.
1

pidof () { ps acx | egrep -i $@ | awk '{print $1}'; }

pmbuko · 2009-02-06 15:33:46 12
See what apache is doing without restarting it in debug mode
This is sample output - yours may be different.
0

pidof httpd | sed 's/ / -p /g' | xargs strace -fp

daniele · 2011-06-28 09:53:19 3
Kill google chrome process
This is sample output - yours may be different.
0

kill $(pidof chrome)

t0kieu · 2012-03-01 10:03:58 3
Kill google chrome process
This is sample output - yours may be different.
0

kill -9 $(pidof chrome)

t0kieu · 2012-03-01 10:07:08 3
Autocomplete directories (CWDs) of other ZSH processes

It gives a 'xcd' command for changing directory to one of CWDs of other ZSH processes (typically running in a terminal emulator). Useful for single-windowed terminal emulators like XTerm or Rxvt which don't have ability to pass CWD of one shell to another. Show Sample Output
This is sample output - yours may be different.
```
$ xcd<TAB>
/home/artur                   /proc
/home/artur/Projects          /usr/src/vim  
```
0

function _xterm_cwds() { for pid in $(pidof -- -zsh) $(pidof zsh); do reply+=$(readlink /proc/$pid/cwd) done }; function xcd() { cd $1 }; compctl -K _xterm_cwds xcd

aartur · 2012-07-12 19:59:46 4
get name of file that is currently playing in mplayer (if there)

grep -v '$/dev/\|pipe:\|socket:$' seemingly looks a bit complicated. This can, of course, be replaced by head -1. However, it is not sure whether the filename line will be first on all systems, so I chose the safer way by filtering out what is not needed here. Show Sample Output
This is sample output - yours may be different.
```
now playing: your fav artist - your fav track.mp3
now playing: your fav movie.mpeg
no track/video playing
```
0

media="$(basename "$(readlink /proc/$(pidof mplayer)/fd/* | grep -v '$/dev/\|pipe:\|socket:$')")" && ((test -n "$media" && echo "now playing: $media") || echo "no track/video playing")

syntaxerror74 · 2015-06-06 13:15:15 9
Show current folder that is searched by find command
This is sample output - yours may be different.
0

watch readlink -f /proc/$(pidof find)/cwd

niltonvasques · 2015-07-19 12:26:43 9
Check the total memory usage of processes with a specific name

Get the total RESIDENT memory used by processes of a specific name. This means this is the MINIMUM used by a process, but some memory could be paged out to swap. Show Sample Output
This is sample output - yours may be different.
```
$ pids=$(pidof chrome); for p in ${pids[@]}; do cat /proc/$p/status | grep -i vmrss | awk '{print $2}'; done | while read m; do let t=$t+$m; echo $t; done | echo "$(tail -n 1) kB"
12613760 kB
```
0

pids=$(pidof chrome); for p in ${pids[@]}; do cat /proc/$p/status | grep -i vmrss | awk '{print $2}'; done | while read m; do let t=$t+$m; echo $t; done | echo "$(tail -n 1) kB"

tyzbit · 2018-04-08 16:43:35 37
Linux system calls of MySQL process
This is sample output - yours may be different.
0

strace -c -p $(pidof -s mysqld) -f -e trace=all

shantanuo · 2020-02-27 03:35:17 122
kill all processes of a program

kill all processes of a program
This is sample output - yours may be different.
-1

kill -9 $(pidof *program*)

salazar · 2009-02-13 18:56:58 9
Count httpd processes

Returns the number of running httpd processes Show Sample Output
This is sample output - yours may be different.
```
21
```
-1

pidof httpd | wc -w

eneko · 2011-02-24 16:46:46 58
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

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Print a random 8 digit number

Don't need to pipe the output into rs if you just tell jot to use a null separator character.

bulk rename files with sed, one-liner

Far from my favorite, but works in sh and with an old sed that doesn't support '-E'

Delete all but the latest 5 files

yes 6 (tail from 6th line)

List upcoming events on google calendar

Requires googlecl (http://code.google.com/p/googlecl/) Even better when you wrap this in a script and allow the --date=STRING to be $1. Then you can type: whatson "next Thursday" The date string for UNIX date is very flexible. You can also add --cal "[regex]" to the end for multiple calendars.

create screencast (record text and audio simultaneously) using 'script' and 'arecord'

This shell function takes a single argument, which is used as the base name of the .wav, .timing and .session files created. To create a screencast: $ screencast test type and talk ... then type 'exit' or to exit the screencast. test.wav will contain the audio from your screencast. test.session will contain text and control characters needed to paint the screen test.timing will contain timing information needed to synch individual keystrokes in test.session with the audio. to play back: $ aplay test.wav & scriptreplay test.{timing,session} NOTE: because the shell function uses the variable "$!", and bash likes to expand '!' during history expansion, you will need to turn off bash's history before you enter the shell function. This can be achieved using the command $set +H

Extracting frames from a video as jpeg files

This command extracts 10 seconds worth of frames, starting from 00:15:45 position, from filename.avi and stores them into out_frames folder as jpeg files. Subtitles are turned off with -sid 999 option.

Adjust gamma so monitor doesn't mess up your body's clock

[UPDATE: Now works for multiple connected outputs] I woke up around midnight with an urge to do some late night hacking, but I didn't want a bright monitor screwing up my body's circadian rhythm. I've heard that at night blue (short wavelength) lights are particularly bad for your diurnal clock. That may be a bunch of hooey, but it is true that redder (longer wavelength) colors are easier on my eyes at night. This command makes the screen dimmer and adjusts the gamma curves to improve contrast, particularly darkening blues and greens (Rɣ=2, Gɣ=3, Bɣ=4). To reset your screen to normal, you can run this command: $ xrandr | sed -n 's/ connected.*//p' | xargs -n1 -tri xrandr --output {} --brightness 1 --gamma 1:1:1 or, more briefly, $ xgamma -g 1 Note: The sed part is fragile and wrong. I'm doing it this way because of a misfeature in xrandr(1), which requires an output be specified but has no programmatic way of querying available outputs. Someone needs to patch up xrandr to be shell script friendly or at least add virtual outputs named "PRIMARY" and "ALL". . Todo: Screen should dim (gradually) at sunset and brighten at sunrise. I think this could be done with a self-resubmitting at job, but I'm running into the commandlinefu 127 character limit just getting the sunrise time: $ wget http://aa.usno.navy.mil/cgi-bin/aa_pap.pl --post-data=$(date "+xxy=%Y&xxm=%m&xxd=%d")"&st=WA&place=Seattle" -q -O- | sed -rn 's/\W*Sunrise\W*(.*)/\1/p' I hope some clever hacker comes up with a command line interface to Google's "OneBox", since the correct time shows up as the first hit when googling for "sunrise:cityname". . [Thank you to @flatcap for the sed improvement, which is much better than the head|tail|cut silliness I had before. And thank you to @braunmagrin for pointing out that the "connected" output may not be on the second line.]

copy partition table from /dev/sda to /dev/sdb

List only hidden files

You can omit the -d to see what's inside directories. In that case, you may want -a to see dotfiles inside those directories. (Otherwise you don't need -a since you're explicitly looking at them.)

SMTP Analysis

This works just as well for SMTP. You could run this on your mail server to watch e-mail senders and recipients: tcpdump -l -s0 -w - tcp dst port 25 | strings | grep -i 'MAIL FROM\|RCPT TO'

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Commands using pidof (18)

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