pstree


SYNOPSIS
       pstree [-a, --arguments] [-c, --compact] [-h, --high-
       light-all, -Hpid, --highlight-pid pid] [-g] --show-pgids] [-l, --long]
       [-n, --numeric-sort] [-p, --show-pids] [-s, --show-parents]
       [-u, --uid-changes] [-Z, --security-context]
       [-A, --ascii, -G, --vt100, -U, --unicode] [pid, user]
       pstree -V, --version

DESCRIPTION
       pstree shows running processes as a tree.  The tree is rooted at either
       pid or init if pid is omitted.   If  a  user  name  is  specified,  all
       process trees rooted at processes owned by that user are shown.

       pstree  visually  merges  identical  branches by putting them in square
       brackets and prefixing them with the repetition count, e.g.

           init-+-getty
                |-getty
                |-getty
                `-getty

       becomes

           init---4*[getty]


       Child threads of a process are found under the parent process  and  are
       shown with the process name in curly braces, e.g.

           icecast2---13*[{icecast2}]


       If  pstree  is called as pstree.x11 then it will prompt the user at the
       end of the line to press return and will not return until that has hap-
       pened.  This is useful for when pstree is run in a xterminal.

       Certain  kernel  or  mount  parameters,  such as the hidepid option for
       procfs, will hide information for some processes. In  these  situations
       pstree will attempt to build the tree without this information, showing
       process names as question marks.


OPTIONS
       -a     Show command line arguments.  If the command line of  a  process
              is  swapped  out,  that  process  is  shown  in parentheses.  -a
              implicitly disables compaction for processes but not threads.

       -A     Use ASCII characters to draw the tree.

       -c     Disable compaction of identical subtrees.  By default,  subtrees
              are compacted whenever possible.

       -G     Use VT100 line drawing characters.
              compaction.  If both PIDs and PGIDs are displayed then PIDs  are
              shown first.

       -l     Display long lines.  By default, lines are truncated to the dis-
              play width or 132 if output is sent to a non-tty or if the  dis-
              play width is unknown.

       -n     Sort processes with the same ancestor by PID instead of by name.
              (Numeric sort.)

       -p     Show PIDs.  PIDs are shown as  decimal  numbers  in  parentheses
              after each process name.  -p implicitly disables compaction.

       -s     Show parent processes of the specified process.

       -u     Show  uid  transitions.   Whenever  the uid of a process differs
              from the uid of its parent, the new uid is shown in  parentheses
              after the process name.

       -U     Use UTF-8 (Unicode) line drawing characters.  Under Linux 1.1-54
              and above, UTF-8 mode is entered on the  console  with  echo  -e
              ' 33%8' and left with echo -e ' 33%@'

       -V     Display version information.

       -Z     (SELinux)  Show  security  context  for each process.  This flag
              will only work if pstree is compilied with SELinux support.

FILES
       /proc  location of the proc file system

BUGS
       Some character sets may be incompatible with the VT100 characters.

SEE ALSO
       ps(1), top(1).



psmisc                            2012-07-28                         PSTREE(1)
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