Commands using pidof (17)
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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
10lsof -p $(pidof firefox) | awk '/.mozilla/ { s = int($7/(2^20)); if(s>0) print (s)" MB -- "$9 | "sort -rn" }' -
8pidof -x -o $$ ${0##*/} && exit
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Check which files are opened by Firefox then sort by largest size (in MB). You can see all files opened by just replacing grep to "/". Useful if you'd like to debug and check which extensions or files are taking too much memory resources in Firefox. Show Sample Output
6FFPID=$(pidof firefox-bin) && lsof -p $FFPID | awk '{ if($7>0) print ($7/1024/1024)" MB -- "$9; }' | grep ".mozilla" | sort -rn -
4renice +5 -p $(pidof <process name>)
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4pstree -plants $(pidof -s firefox)
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1pidof httpd
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1pidof () { ps acx | egrep -i $@ | awk '{print $1}'; }
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0pidof httpd | sed 's/ / -p /g' | xargs strace -fp
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0kill $(pidof chrome)
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0kill -9 $(pidof chrome)
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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
0function _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 -
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
0media="$(basename "$(readlink /proc/$(pidof mplayer)/fd/* | grep -v '\(/dev/\|pipe:\|socket:\)')")" && ((test -n "$media" && echo "now playing: $media") || echo "no track/video playing") -
0watch readlink -f /proc/$(pidof find)/cwd
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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
0pids=$(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" -
kill all processes of a program
-1kill -9 $(pidof *program*) -
Returns the number of running httpd processes Show Sample Output
-1pidof httpd | wc -w -
-2kill -9 $(pidof process)
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