PSTREE(1)                        User Commands                       PSTREE(1)


       pstree - display a tree of processes


       pstree [-a] [-c] [-h|-Hpid] [-l] [-n] [-p] [-u] [-Z] [-A|-G|-U]
       pstree -V


       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.




       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.


       -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.

       -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

       -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.

       -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
              \033%8 and left with echo -e \033%@

       -V     Display version information.

       -Z     (SELinux) Show security context for each process.


       /proc     location of the proc file system


       Werner     Almesberger     <>     Craig     Small


       ps(1), top(1)

Linux                         September 26, 2003                     PSTREE(1)

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