Provided by: procps_3.3.9-1ubuntu2_i386 bug

NAME

       pgrep,  pkill  -  look  up  or signal processes based on name and other
       attributes

SYNOPSIS

       pgrep [options] pattern
       pkill [options] pattern

DESCRIPTION

       pgrep looks through the  currently  running  processes  and  lists  the
       process  IDs  which  match  the  selection criteria to stdout.  All the
       criteria have to match.  For example,

              $ pgrep -u root sshd

       will only list the processes called sshd AND owned  by  root.   On  the
       other hand,

              $ pgrep -u root,daemon

       will list the processes owned by root OR daemon.

       pkill  will  send  the  specified  signal  (by default SIGTERM) to each
       process instead of listing them on stdout.

OPTIONS

       -signal
       --signal signal
              Defines the signal to send to each matched process.  Either  the
              numeric or the symbolic signal name can be used.  (pkill only.)

       -c, --count
              Suppress  normal  output;  instead  print  a  count  of matching
              processes.  When count does not  match  anything,  e.g.  returns
              zero, the command will return non-zero value.

       -d, --delimiter delimiter
              Sets  the  string  used to delimit each process ID in the output
              (by default a newline).  (pgrep only.)

       -f, --full
              The pattern is normally only matched against the  process  name.
              When -f is set, the full command line is used.

       -g, --pgroup pgrp,...
              Only  match  processes in the process group IDs listed.  Process
              group 0 is translated into pgrep's or pkill's own process group.

       -G, --group gid,...
              Only match processes whose real group ID is listed.  Either  the
              numerical or symbolical value may be used.

       -l, --list-name
              List the process name as well as the process ID.  (pgrep only.)

       -a, --list-full
              List  the  full  command line as well as the process ID.  (pgrep
              only.)

       -n, --newest
              Select only the newest (most recently started) of  the  matching
              processes.

       -o, --oldest
              Select  only the oldest (least recently started) of the matching
              processes.

       -P, --parent ppid,...
              Only match processes whose parent process ID is listed.

       -s, --session sid,...
              Only  match  processes  whose  process  session  ID  is  listed.
              Session  ID  0 is translated into pgrep's or pkill's own session
              ID.

       -t, --terminal term,...
              Only match processes whose controlling terminal is listed.   The
              terminal name should be specified without the "/dev/" prefix.

       -u, --euid euid,...
              Only  match processes whose effective user ID is listed.  Either
              the numerical or symbolical value may be used.

       -U, --uid uid,...
              Only match processes whose real user ID is listed.   Either  the
              numerical or symbolical value may be used.

       -v, --inverse
              Negates  the  matching.   This option is usually used in pgrep's
              context.  In pkill's context the short  option  is  disabled  to
              avoid accidental usage of the option.

       -w, --lightweight
              Shows  all  thread  ids  instead of pids in pgrep's context.  In
              pkill's context this option is disabled.

       -x, --exact
              Only match processes whose names  (or  command  line  if  -f  is
              specified) exactly match the pattern.

       -F, --pidfile file
              Read  PID's  from  file.  This option is perhaps more useful for
              pkill than pgrep.

       -L, --logpidfile
              Fail if pidfile (see -F) not locked.

       --ns pid
              Match processes that belong to the same namespaces. Required  to
              run  as  root  to match processes from other users. See --nslist
              for how to limit which namespaces to match.

       --nslist name,...
              Match only the provided namespaces. Available  namespaces:  ipc,
              mnt, net, pid, user,uts.

       -V, --version
              Display version information and exit.

       -h, --help
              Display help and exit.

OPERANDS

       pattern
              Specifies  an  Extended  Regular Expression for matching against
              the process names or command lines.

EXAMPLES

       Example 1: Find the process ID of the named daemon:

              $ pgrep -u root named

       Example 2: Make syslog reread its configuration file:

              $ pkill -HUP syslogd

       Example 3: Give detailed information on all xterm processes:

              $ ps -fp $(pgrep -d, -x xterm)

       Example 4: Make all netscape processes run nicer:

              $ renice +4 $(pgrep netscape)

EXIT STATUS

       0      One or more processes matched the criteria.
       1      No processes matched.
       2      Syntax error in the command line.
       3      Fatal error: out of memory etc.

NOTES

       The process name used for matching is  limited  to  the  15  characters
       present  in  the  output of /proc/pid/stat.  Use the -f option to match
       against the complete command line, /proc/pid/cmdline.

       The running pgrep or pkill process will never report itself as a match.

BUGS

       The options -n and -o and -v can not be combined.  Let me know  if  you
       need to do this.

       Defunct processes are reported.

SEE ALSO

       ps(1), regex(7), signal(7), killall(1), skill(1), kill(1), kill(2)

STANDARDS

       pkill   and   pgrep   were   introduced   in  Sun's  Solaris  7.   This
       implementation is fully compatible.

AUTHOR

       Kjetil Torgrim Homme ⟨kjetilho@ifi.uio.no

REPORTING BUGS

       Please send bug reports to ⟨procps@freelists.org