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CentOS 7.0 - man page for pstree (centos section 1)

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PSTREE(1)				  User Commands 				PSTREE(1)

NAME
       pstree - display a tree of processes

SYNOPSIS
       pstree [-a, --arguments] [-c, --compact] [-h, --highlight-all, -Hpid, --highlight-pid pid]
       [-g] --show-pgids] [-l, --long] [-n, --numeric-sort] [-N, --ns-sortns [-p, --show-pids]
       [-s, --show-parents] [-S, --ns-changes] [-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 happened.  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 when-
	      ever possible.

       -G     Use VT100 line drawing characters.

       -h     Highlight  the  current process and its ancestors.  This is a no-op if the terminal
	      doesn't support highlighting or if neither the  current  process	nor  any  of  its
	      ancestors are in the subtree being shown.

       -H     Like -h, but highlight the specified process instead.  Unlike with -h, pstree fails
	      when using -H if highlighting is not available.

       -g     Show PGIDs.  Process Group IDs are shown as decimal numbers  in  parentheses  after
	      each  process name.  -p implicitly disables compaction.  If both PIDs and PGIDs are
	      displayed then PIDs are shown first.

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

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

       -N     Show  individual	trees  for  each  namespace of the type specified.  The available
	      types are: ipc, mnt, net, pid, user, uts.  Regular users don't have access to other
	      users' processes information, so the output will be limited.

       -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.

       -S     Show namespaces transitions.  Like -N, the output is limited when running as a reg-
	      ular user.

       -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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