pstree (1)


       pstree - display a tree of processes


       pstree [-a] [-c] [-h|-Hpid] [-l] [-n] [-p] [-u] [-G|-U] [pid|user]
       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.





       -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.

       -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
       -s     (Flask) Show Security ID (SID) for each process.

       -x     (Flask) Show security context for each process.


       /proc     location of the proc file system


       Werner Almesberger <>


       ps(1), top(1)

Linux                             May 6, 1998                        pstree(1)