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'\" -*- coding: UTF-8 -*-
.\" Copyright (C) 1998 Miquel van Smoorenburg.
.\"
.\" This program is free software; you can redistribute it and/or modify
.\" it under the terms of the GNU General Public License as published by
.\" the Free Software Foundation; either version 2 of the License, or
.\" (at your option) any later version.
.\"
.\" This program is distributed in the hope that it will be useful,
.\" but WITHOUT ANY WARRANTY; without even the implied warranty of
.\" MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
.\" GNU General Public License for more details.
.\"
.\" You should have received a copy of the GNU General Public License
.\" along with this program; if not, write to the Free Software
.\" Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
.\"
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.TH PIDOF 1 "2018-03-03" "" "User Commands"
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.SH NAME
pidof -- find the process ID of a running program.
.SH SYNOPSIS
.B pidof
.RB [ \-s ]
.RB [ \-c ]
.RB [ \-x ]
.RB [ \-o
.IR omitpid[,omitpid..] ]
.RB [ \-o
.IR omitpid[,omitpid..].. ]
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.RB [ \-S
.IR separator ]
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.B program
.RB [ program.. ]
.SH DESCRIPTION
.B Pidof
finds the process id's (pids) of the named programs. It prints those
id's on the standard output.
.SH OPTIONS
.IP \-s
Single shot - this instructs the program to only return one \fIpid\fP.
.IP \-c
Only return process ids that are running with the same root directory.
This option is ignored for non-root users, as they will be unable to check
the current root directory of processes they do not own.
.IP \-x
Scripts too - this causes the program to also return process id's of
shells running the named scripts.
.IP "-o \fIomitpid\fP"
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Tells \fIpidof\fP to omit processes with that process id. The special
pid \fB%PPID\fP can be used to name the parent process of the \fIpidof\fP
program, in other words the calling shell or shell script.
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.IP "-S \fIseparator\fP"
Use \fIseparator\fP as a separator put between pids. Used only when
more than one pids are printed for the program.
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.SH "EXIT STATUS"
.TP
.B 0
At least one program was found with the requested name.
.TP
.B 1
No program was found with the requested name.

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.SH BUGS
When using the \fI\-x\fP option,
.B pidof
only has a simple method for detecting scripts and will miss scripts that,
for example, use env. This limitation is due to how the scripts look in
the proc filesystem.

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.SH SEE ALSO
.BR pgrep (1),
.BR pkill (1)
.SH AUTHOR
Jaromir Capik <jcapik@redhat.com>