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PIDOF(8) Linux System Administrator's Manual PIDOF(8)
pidof -- find the process ID of a running program.
pidof [-s] [-x] [-o omitpid] [-o omitpid..] program [program..]
Pidof finds the process id's (pids) of the named programs. It prints those id's on the
standard output. This program is on some systems used in run-level change scripts, espe-
cially when the system has a System-V like rc structure. In that case these scripts are
located in /etc/rc?.d, where ? is the runlevel. If the system has a start-stop-daemon (8)
program that should be used instead.
-s Single shot - this instructs the program to only return one pid.
-x Scripts too - this causes the program to also return process id's of shells running
the named scripts.
-o Tells pidof to omit processes with that process id. The special pid %PPID can be
used to name the parent process of the pidof program, in other words the calling
shell or shell script.
pidof is simply a (symbolic) link to the killall5 program, which should also be located in
When pidof is invoked with a full pathname to the program it should find the pid of, it is
reasonably safe. Otherwise it is possible that it returns pids of running programs that
happen to have the same name as the program you're after but are actually other programs.
shutdown(8), init(8), halt(8), reboot(8)
Miquel van Smoorenburg, email@example.com
01 Sep 1998 PIDOF(8)
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