emo/procps
1
0
Fork 0
Code Issues Pull Requests Packages Releases Activity
7f5971058a
procps/pidof.1

68 lines
2.2 KiB
Groff
Raw Normal View History

pidof: reimplemented from scratch (replacing sysvinit pidof) As the sysvinit becomes obsolete, some of the bundled tools need to find a new home. The procps-ng project seems to be the most suitable project for adopting the pidof tool. This commit introduces a redesigned version of pidof that satisfies the LSB requirements. In corner cases the behaviour might differ from the former one as the new version doesn't use any stat(2) calls.
2013-10-05 00:05:01 +05:30
'\" -*- 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
.\"
.TH PIDOF 1 "24 Jul 2013" "" "User Commands"
.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..].. ]
pidof: allow to change a separator put between pids I frequency use pidof command with strace system call tracer. strace can trace MULTIPLE processes specified with "-p $PID" arguments like: strace -p 1 -p 1030 -p 3043 Sometimes I want to do as following strace -p $(pidof httpd) However, above command line doesn't work because -p option is needed for specifying a pid. pidof uses a whitespace as a separator. For passing the output to strace, the separator should be replaced with ' -p '. This maybe not a special to my use case. This commit introduces -S option that allows a user to specify a separator the one wants. $ ./pidof bash ./pidof bash 24624 18790 12786 11898 11546 10766 7654 5095 $ ./pidof -S ',' bash ./pidof -S ',' bash 24624,18790,12786,11898,11546,10766,7654,5095 $ ./pidof -S '-p ' bash ./pidof -S '-p ' bash 24624-p 18790-p 12786-p 11898-p 11546-p 10766-p 7654-p 5095 $ ./pidof -S ' -p ' bash ./pidof -S ' -p ' bash 24624 -p 18790 -p 12786 -p 11898 -p 11546 -p 10766 -p 7654 -p 5095 $ strace -p $(./pidof -S ' -p ' bash) strace -p $(./pidof -S ' -p ' bash) strace: Process 24624 attached strace: Process 18790 attached strace: Process 12786 attached ... Signed-off-by: Masatake YAMATO <yamato@redhat.com>
2018-02-24 14:33:11 +05:30
.RB [ \-S
.IR separator ]
pidof: reimplemented from scratch (replacing sysvinit pidof) As the sysvinit becomes obsolete, some of the bundled tools need to find a new home. The procps-ng project seems to be the most suitable project for adopting the pidof tool. This commit introduces a redesigned version of pidof that satisfies the LSB requirements. In corner cases the behaviour might differ from the former one as the new version doesn't use any stat(2) calls.
2013-10-05 00:05:01 +05:30
.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"
pidof: support for omitted %PPID and additional separators This commit introduces support for special %PPID value that can be passed to the -o option as a substitution for parent PID. It also allows users to use two additional separators for omitted PIDs - colon and semicolon.
2013-10-14 19:08:33 +05:30
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.
pidof: allow to change a separator put between pids I frequency use pidof command with strace system call tracer. strace can trace MULTIPLE processes specified with "-p $PID" arguments like: strace -p 1 -p 1030 -p 3043 Sometimes I want to do as following strace -p $(pidof httpd) However, above command line doesn't work because -p option is needed for specifying a pid. pidof uses a whitespace as a separator. For passing the output to strace, the separator should be replaced with ' -p '. This maybe not a special to my use case. This commit introduces -S option that allows a user to specify a separator the one wants. $ ./pidof bash ./pidof bash 24624 18790 12786 11898 11546 10766 7654 5095 $ ./pidof -S ',' bash ./pidof -S ',' bash 24624,18790,12786,11898,11546,10766,7654,5095 $ ./pidof -S '-p ' bash ./pidof -S '-p ' bash 24624-p 18790-p 12786-p 11898-p 11546-p 10766-p 7654-p 5095 $ ./pidof -S ' -p ' bash ./pidof -S ' -p ' bash 24624 -p 18790 -p 12786 -p 11898 -p 11546 -p 10766 -p 7654 -p 5095 $ strace -p $(./pidof -S ' -p ' bash) strace -p $(./pidof -S ' -p ' bash) strace: Process 24624 attached strace: Process 18790 attached strace: Process 12786 attached ... Signed-off-by: Masatake YAMATO <yamato@redhat.com>
2018-02-24 14:33:11 +05:30
.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.
pidof: reimplemented from scratch (replacing sysvinit pidof) As the sysvinit becomes obsolete, some of the bundled tools need to find a new home. The procps-ng project seems to be the most suitable project for adopting the pidof tool. This commit introduces a redesigned version of pidof that satisfies the LSB requirements. In corner cases the behaviour might differ from the former one as the new version doesn't use any stat(2) calls.
2013-10-05 00:05:01 +05:30
.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.
.SH SEE ALSO
.BR pgrep (1),
.BR pkill (1)
.SH AUTHOR
Jaromir Capik <jcapik@redhat.com>
Reference in New Issue Copy Permalink