PSTREE(1) General Commands Manual PSTREE(1)
pstree - list processes as a tree
pstree [-Uw] [-f file] [-g n] [-l n] [-p pid] [-s string] [-u user]
Tree sorted output frontend for ps(1). pstree uses the output of the
ps(1) program to show nicely formatted process family trees.
For each rootpid argument, pstree shows one tree rooted at that process.
By default, if no rootpid argument is given, it shows a single tree
rooted at process 1.
The options are as follows:
-f file Read input from file instead of running ``ps -kaxwwo
user,pid,ppid,pgid,command''. If file is a single dash (`-'),
pstree reads from standard input.
-g n Use graphics chars for tree. n = 1: IBM-850, n = 2: VT100, n
= 3: UTF8.
-l n Show a maximum of n levels.
-p pid Show only parents and descendants of the process pid.
-s string Show only parents and descendants of processes containing the
string in their commandline.
-U Do not show branches containing only root processes.
-u user Show only parents and descendants of processes of user.
-w Wide output, not truncated to terminal width.
COLUMNS The width of the terminal in characters. This can be set with
stty(1) columns number.
The pstree utility exits 0 on success, and >0 if an error occurs.
Show branches of processes containing ``httpd'' using VT100 graphic
$ pstree -g 2 -s httpd
Show process number ``15495'' and its descendants:
$ pstree 15495
Show process number ``15495'' and its parents and descendants:
$ pstree -p 15495
The program was written and is maintained by Fred Hucht
<email@example.com>, and this manual page was initially set up by
OpenBSD 5.9 June 4, 2013 OpenBSD 5.9
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