pstree - display a tree of processes
pstree [-a] [-c] [-h|-Hpid] [-l] [-n] [-p] [-u] [-G|-U] [pid|user]
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
-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
-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.
-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 <Werner.Almesberger@epfl.ch>
Linux May 6, 1998 pstree(1)