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pgrep man page

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PKILL(1)                FreeBSD General Commands Manual               PKILL(1)


NAME

     pgrep, pkill -- find or signal processes by name


SYNOPSIS

     pgrep [-LSfilnovx] [-F pidfile] [-G gid] [-M core] [-N system] [-P ppid]
           [-U uid] [-d delim] [-g pgrp] [-j jid] [-s sid] [-t tty] [-u euid]
           pattern ...
     pkill [-signal] [-Lfinovx] [-F pidfile] [-G gid] [-M core] [-N system]
           [-P ppid] [-U uid] [-g pgrp] [-j jid] [-s sid] [-t tty] [-u euid]
           pattern ...


DESCRIPTION

     The pgrep command searches the process table on the running system and
     prints the process IDs of all processes that match the criteria given on
     the command line.

     The pkill command searches the process table on the running system and
     signals all processes that match the criteria given on the command line.

     The following options are available:

     -F pidfile  Restrict matches to a process whose PID is stored in the
                 pidfile file.

     -G gid      Restrict matches to processes with a real group ID in the
                 comma-separated list gid.

     -L          The pidfile file given for the -F option must be locked with
                 the flock(2) syscall or created with pidfile(3).

     -M core     Extract values associated with the name list from the speci-
                 fied core instead of the currently running system.

     -N system   Extract the name list from the specified system instead of
                 the default, which is the kernel image the system has booted
                 from.

     -P ppid     Restrict matches to processes with a parent process ID in the
                 comma-separated list ppid.

     -S          Search also in system processes (kernel threads).

     -U uid      Restrict matches to processes with a real user ID in the
                 comma-separated list uid.

     -d delim    Specify a delimiter to be printed between each process ID.
                 The default is a newline.  This option can only be used with
                 the pgrep command.

     -f          Match against full argument lists.  The default is to match
                 against process names.

     -g pgrp     Restrict matches to processes with a process group ID in the
                 comma-separated list pgrp.  The value zero is taken to mean
                 the process group ID of the running pgrep or pkill command.

     -i          Ignore case distinctions in both the process table and the
                 supplied pattern.

     -j jid      Restrict matches to processes inside jails with a jail ID in
                 the comma-separated list jid.  The value zero is taken to
                 mean any jail ID.

     -l          Long output.  Print the process name in addition to the
                 process ID for each matching process.  If used in conjunction
                 with -f, print the process ID and the full argument list for
                 each matching process.  This option can only be used with the
                 pgrep command.

     -n          Select only the newest (most recently started) of the match-
                 ing processes.

     -o          Select only the oldest (least recently started) of the match-
                 ing processes.

     -s sid      Restrict matches to processes with a session ID in the comma-
                 separated list sid.  The value zero is taken to mean the ses-
                 sion ID of the running pgrep or pkill command.

     -t tty      Restrict matches to processes associated with a terminal in
                 the comma-separated list tty.  Terminal names may be of the
                 form ttyxx or the shortened form xx.  A single dash (`-')
                 matches processes not associated with a terminal.

     -u euid     Restrict matches to processes with an effective user ID in
                 the comma-separated list euid.

     -v          Reverse the sense of the matching; display processes that do
                 not match the given criteria.

     -x          Require an exact match of the process name, or argument list
                 if -f is given.  The default is to match any substring.

     -signal     A non-negative decimal number or symbolic signal name speci-
                 fying the signal to be sent instead of the default TERM.
                 This option is valid only when given as the first argument to
                 pkill.

     If any pattern operands are specified, they are used as regular expres-
     sions to match the command name or full argument list of each process.
     If the -f option is not specified, then the pattern will attempt to match
     the command name.  However, presently FreeBSD will only keep track of the
     first 19 characters of the command name for each process.  Attempts to
     match any characters after the first 19 of a command name will quietly
     fail.

     Note that a running pgrep or pkill process will never consider itself nor
     system processes (kernel threads) as a potential match.


EXIT STATUS

     The pgrep and pkill utilities return one of the following values upon
     exit:

     0       One or more processes were matched.

     1       No processes were matched.

     2       Invalid options were specified on the command line.

     3       An internal error occurred.


SEE ALSO

     kill(1), killall(1), ps(1), flock(2), kill(2), sigaction(2), pidfile(3),
     re_format(7)


HISTORY

     The pkill and pgrep utilities first appeared in NetBSD 1.6.  They are
     modelled after utilities of the same name that appeared in Sun Solaris 7.
     They made their first appearance in FreeBSD 5.3.


AUTHORS

     Andrew Doran <ad@NetBSD.org>

FreeBSD 6.2                     March 20, 2005                     FreeBSD 6.2


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