348 lines
8.0 KiB
HTML
348 lines
8.0 KiB
HTML
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
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<HTML><HEAD><TITLE>Man page of PGREP</TITLE>
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</HEAD><BODY>
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<H1>PGREP</H1>
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Section: User Commands (1)<BR>Updated: 2019-03-05<BR><A HREF="#index">Index</A>
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<A HREF="/cgi-bin/man/man2html">Return to Main Contents</A><HR>
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<A NAME="lbAB"> </A>
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<H2>NAME</H2>
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pgrep, pkill - look up or signal processes based on name and other attributes
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<A NAME="lbAC"> </A>
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<H2>SYNOPSIS</H2>
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<B>pgrep</B>
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[options] pattern
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<BR>
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<B>pkill</B>
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[options] pattern
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<A NAME="lbAD"> </A>
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<H2>DESCRIPTION</H2>
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<B>pgrep</B>
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looks through the currently running processes and lists the process IDs which
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match the selection criteria to stdout. All the criteria have to match.
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For example,
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<DL COMPACT>
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<DT id="1"><DD>
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$ pgrep -u root sshd
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</DL>
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<P>
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will only list the processes called
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<B>sshd</B>
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AND owned by
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<B>root</B>.
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On the other hand,
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<DL COMPACT>
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<DT id="2"><DD>
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$ pgrep -u root,daemon
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</DL>
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<P>
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will list the processes owned by
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<B>root</B>
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OR
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<B>daemon</B>.
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<P>
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<B>pkill</B>
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will send the specified signal (by default
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<B>SIGTERM</B>)
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to each process instead of listing them on stdout.
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<A NAME="lbAE"> </A>
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<H2>OPTIONS</H2>
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<DL COMPACT>
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<DT id="3"><B>-</B><I>signal</I><DD>
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<B>--signal</B> <I>signal</I>
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Defines the signal to send to each matched process. Either the numeric or
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the symbolic signal name can be used.
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(<B>pkill</B>
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only.)
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<DT id="4"><B>-c</B>, <B>--count</B><DD>
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Suppress normal output; instead print a count of matching processes. When
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count does not match anything, e.g. returns zero, the command will return
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non-zero value.
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<DT id="5"><B>-d</B>, <B>--delimiter</B> <I>delimiter</I><DD>
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Sets the string used to delimit each process ID in the output (by default a
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newline).
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(<B>pgrep</B>
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only.)
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<DT id="6"><B>-f</B>, <B>--full</B><DD>
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The
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<I>pattern</I>
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is normally only matched against the process name. When
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<B>-f</B>
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is set, the full command line is used.
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<DT id="7"><B>-g</B>, <B>--pgroup</B> <I>pgrp</I>,...<DD>
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Only match processes in the process group IDs listed. Process group 0 is
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translated into
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<B>pgrep</B>'s
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or
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<B>pkill</B>'s
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own process group.
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<DT id="8"><B>-G</B>, <B>--group</B> <I>gid</I>,...<DD>
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Only match processes whose real group ID is listed. Either the numerical or
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symbolical value may be used.
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<DT id="9"><B>-i</B>, <B>--ignore-case</B><DD>
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Match processes case-insensitively.
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<DT id="10"><B>-l</B>, <B>--list-name</B><DD>
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List the process name as well as the process ID.
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(<B>pgrep</B>
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only.)
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<DT id="11"><B>-a</B>, <B>--list-full</B><DD>
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List the full command line as well as the process ID.
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(<B>pgrep</B>
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only.)
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<DT id="12"><B>-n</B>, <B>--newest</B><DD>
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Select only the newest (most recently started) of the matching processes.
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<DT id="13"><B>-o</B>, <B>--oldest</B><DD>
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Select only the oldest (least recently started) of the matching processes.
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<DT id="14"><B>-P</B>, <B>--parent</B> <I>ppid</I>,...<DD>
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Only match processes whose parent process ID is listed.
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<DT id="15"><B>-s</B>, <B>--session</B> <I>sid</I>,...<DD>
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Only match processes whose process session ID is listed. Session ID 0
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is translated into
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<B>pgrep</B>'s
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or
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<B>pkill</B>'s
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own session ID.
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<DT id="16"><B>-t</B>, <B>--terminal</B> <I>term</I>,...<DD>
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Only match processes whose controlling terminal is listed. The terminal name
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should be specified without the "/dev/" prefix.
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<DT id="17"><B>-u</B>, <B>--euid</B> <I>euid</I>,...<DD>
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Only match processes whose effective user ID is listed. Either the numerical
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or symbolical value may be used.
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<DT id="18"><B>-U</B>, <B>--uid</B> <I>uid</I>,...<DD>
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Only match processes whose real user ID is listed. Either the numerical or
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symbolical value may be used.
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<DT id="19"><B>-v</B>, <B>--inverse</B><DD>
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Negates the matching. This option is usually used in
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<B>pgrep</B>'s
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context. In
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<B>pkill</B>'s
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context the short option is disabled to avoid accidental usage of the option.
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<DT id="20"><B>-w</B>, <B>--lightweight</B><DD>
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Shows all thread ids instead of pids in
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<B>pgrep</B>'s
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context. In
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<B>pkill</B>'s
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context this option is disabled.
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<DT id="21"><B>-x</B>, <B>--exact</B><DD>
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Only match processes whose names (or command line if -f is specified)
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<B>exactly</B>
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match the
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<I>pattern</I>.
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<DT id="22"><B>-F</B>, <B>--pidfile</B> <I>file</I><DD>
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Read
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<I>PID</I>'s
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from file. This option is perhaps more useful for
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<B>pkill</B>
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than
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<B>pgrep</B>.
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<DT id="23"><B>-L</B>, <B>--logpidfile</B><DD>
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Fail if pidfile (see -F) not locked.
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<DT id="24"><B>-r</B>, <B>--runstates</B> <I>D,R,S,Z,</I>...<DD>
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Match only processes which match the process state.
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<DT id="25"><B>--ns </B><I>pid</I><DD>
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Match processes that belong to the same namespaces. Required to run as
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root to match processes from other users. See --nslist for how to limit
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which namespaces to match.
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<DT id="26"><B>--nslist </B><I>name</I>,...<DD>
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Match only the provided namespaces. Available namespaces:
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ipc, mnt, net, pid, user,uts.
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<DT id="27"><B>-V</B>, <B>--version</B><DD>
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Display version information and exit.
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<DT id="28"><B>-h</B>, <B>--help</B><DD>
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Display help and exit.
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</DL>
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<A NAME="lbAF"> </A>
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<H2>OPERANDS</H2>
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<DL COMPACT>
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<DT id="29"><I>pattern</I>
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<DD>
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Specifies an Extended Regular Expression for matching against the process
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names or command lines.
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</DL>
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<A NAME="lbAG"> </A>
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<H2>EXAMPLES</H2>
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Example 1: Find the process ID of the
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<B>named</B>
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daemon:
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<DL COMPACT>
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<DT id="30"><DD>
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$ pgrep -u root named
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</DL>
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<P>
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Example 2: Make
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<B>syslog</B>
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reread its configuration file:
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<DL COMPACT>
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<DT id="31"><DD>
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$ pkill -HUP syslogd
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</DL>
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<P>
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Example 3: Give detailed information on all
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<B>xterm</B>
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processes:
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<DL COMPACT>
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<DT id="32"><DD>
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$ ps -fp $(pgrep -d, -x xterm)
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</DL>
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<P>
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Example 4: Make all
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<B>chrome</B>
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processes run nicer:
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<DL COMPACT>
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<DT id="33"><DD>
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$ renice +4 $(pgrep chrome)
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</DL>
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<A NAME="lbAH"> </A>
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<H2>EXIT STATUS</H2>
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<DL COMPACT>
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<DT id="34">0<DD>
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One or more processes matched the criteria. For pkill the process must also
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have been successfully signalled.
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<DT id="35">1<DD>
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No processes matched or none of them could be signalled.
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<DT id="36">2<DD>
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Syntax error in the command line.
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<DT id="37">3<DD>
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Fatal error: out of memory etc.
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</DL>
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<A NAME="lbAI"> </A>
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<H2>NOTES</H2>
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The process name used for matching is limited to the 15 characters present in
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the output of /proc/<I>pid</I>/stat. Use the -f option to match against the
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complete command line, /proc/<I>pid</I>/cmdline.
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<P>
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The running
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<B>pgrep</B>
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or
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<B>pkill</B>
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process will never report itself as a
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match.
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<A NAME="lbAJ"> </A>
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<H2>BUGS</H2>
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The options
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<B>-n</B>
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and
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<B>-o</B>
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and
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<B>-v</B>
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can not be combined. Let
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me know if you need to do this.
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<P>
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Defunct processes are reported.
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<P>
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<A NAME="lbAK"> </A>
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<H2>SEE ALSO</H2>
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<B><A HREF="/cgi-bin/man/man2html?1+ps">ps</A></B>(1),
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<B><A HREF="/cgi-bin/man/man2html?7+regex">regex</A></B>(7),
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<B><A HREF="/cgi-bin/man/man2html?7+signal">signal</A></B>(7),
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<B><A HREF="/cgi-bin/man/man2html?1+killall">killall</A></B>(1),
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<B><A HREF="/cgi-bin/man/man2html?1+skill">skill</A></B>(1),
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<B><A HREF="/cgi-bin/man/man2html?1+kill">kill</A></B>(1),
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<B><A HREF="/cgi-bin/man/man2html?2+kill">kill</A></B>(2)
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<A NAME="lbAL"> </A>
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<H2>AUTHOR</H2>
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Kjetil Torgrim Homme
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<A NAME="lbAM"> </A>
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<H2>REPORTING BUGS</H2>
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Please send bug reports to
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<P>
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<HR>
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<A NAME="index"> </A><H2>Index</H2>
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<DL>
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<DT id="38"><A HREF="#lbAB">NAME</A><DD>
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<DT id="39"><A HREF="#lbAC">SYNOPSIS</A><DD>
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<DT id="40"><A HREF="#lbAD">DESCRIPTION</A><DD>
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<DT id="41"><A HREF="#lbAE">OPTIONS</A><DD>
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<DT id="42"><A HREF="#lbAF">OPERANDS</A><DD>
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<DT id="43"><A HREF="#lbAG">EXAMPLES</A><DD>
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<DT id="44"><A HREF="#lbAH">EXIT STATUS</A><DD>
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<DT id="45"><A HREF="#lbAI">NOTES</A><DD>
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<DT id="46"><A HREF="#lbAJ">BUGS</A><DD>
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<DT id="47"><A HREF="#lbAK">SEE ALSO</A><DD>
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<DT id="48"><A HREF="#lbAL">AUTHOR</A><DD>
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<DT id="49"><A HREF="#lbAM">REPORTING BUGS</A><DD>
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</DL>
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<HR>
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This document was created by
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<A HREF="/cgi-bin/man/man2html">man2html</A>,
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using the manual pages.<BR>
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Time: 00:05:23 GMT, March 31, 2021
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</BODY>
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</HTML>
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