pstree (PSmisc) 22.21 Copyright (C) 1993-2009 Werner Almesberger and Craig Small PSmisc comes with ABSOLUTELY NO WARRANTY. This is free software, and you are welcome to redistribute it under the terms of the GNU General Public License. For more information about these matters, see the files named COPYING.

pstree: unrecognized option '--help' Usage: pstree [ -a ] [ -c ] [ -h | -H PID ] [ -l ] [ -n ] [ -p ] [ -g ] [ -u ] [ -A | -G | -U ] [ PID | USER ] pstree -V Display a tree of processes. -a, --arguments show command line arguments -A, --ascii use ASCII line drawing characters -c, --compact don't compact identical subtrees -h, --highlight-all highlight current process and its ancestors -H PID, --highlight-pid=PID highlight this process and its ancestors -g, --show-pgids show process group ids; implies -c -G, --vt100 use VT100 line drawing characters -l, --long don't truncate long lines -n, --numeric-sort sort output by PID -N type, --ns-sort=type sort by namespace type (ipc, mnt, net, pid, user, uts) -p, --show-pids show PIDs; implies -c -s, --show-parents show parents of the selected process -S, --ns-changes show namespace transitions -u, --uid-changes show uid transitions -U, --unicode use UTF-8 (Unicode) line drawing characters -V, --version display version information -Z show SELinux security contexts PID start at this PID; default is 1 (init) USER show only trees rooted at processes of this user