pstree - display a tree of processes


   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


   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.




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


   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.


   -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.

   -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

   -g     Show  PGIDs.   Process Group IDs are shown as decimal numbers in
          parentheses after each process  name.   -g  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  either
          the  COLUMNS  environment  variable  or  the  display width.  If
          neither of these methods work, the default  of  132  columns  is

   -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 regular 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.


   /proc  location of the proc file system


   Some character sets may be incompatible with the VT100 characters.


   ps(1), top(1).


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