pstree - display a tree of processes
, -Hpid, --highlight-pid pid]
shows running processes as a tree. The tree is rooted at either
is omitted. If a user name is
specified, all process trees rooted at processes owned by that user are shown.
visually merges identical branches by putting them in square
brackets and prefixing them with the repetition count, e.g.
Child threads of a process are found under the parent process and are shown with
the process name in curly braces, e.g.
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
happened. This is useful for when pstree
is run in a xterminal.
Certain kernel or mount parameters, such as the hidepid option for procfs, will
hide information for some processes. In these situations pstree
attempt to build the tree without this information, showing process names as
- Show command line arguments. If the command line of a
process is swapped out, that process is shown in parentheses. -a
implicitly disables compaction for processes but not threads.
- Use ASCII characters to draw the tree.
- Disable compaction of identical subtrees. By default,
subtrees are compacted whenever possible.
- Use VT100 line drawing characters.
- 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
- Like -h, but highlight the specified process
instead. Unlike with -h, pstree fails when using -H
if highlighting is not available.
- Show PGIDs. Process Group IDs are shown as decimal numbers
in parentheses after each process name. -g implicitly disables
compaction. If both PIDs and PGIDs are displayed then PIDs are shown
- Display long lines. By default, lines are truncated to
either the COLUMNS environment variable or the display width. If neither
of these methods work, the default of 132 columns is used.
- Sort processes with the same ancestor by PID instead of by
name. (Numeric sort.)
- Show individual trees for each namespace of the type
specified. The available types are: ipc, mnt, net, pid, user, uts. Regular
users don't have access to other users' processes information, so the
output will be limited.
- Show PIDs. PIDs are shown as decimal numbers in parentheses
after each process name. -p implicitly disables compaction.
- Show parent processes of the specified process.
- Show namespaces transitions. Like -N, the output is limited
when running as a regular user.
- Show full names for threads when available.
- Hide threads and only show processes.
- 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
- 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
' 33%8' and left with echo -e ' 33%@'
- Display version information.
- (SELinux) Show security context for each process. This flag
will only work if pstree is compiled with SELinux support.
- location of the proc file system
Some character sets may be incompatible with the VT100 characters.