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NAME | SYNOPSIS | DESCRIPTION | OPTIONS | FILES | BUGS | SEE ALSO | COLOPHON |
PSTREE(1) User Commands PSTREE(1)
pstree - display a tree of processes
pstree [-a, --arguments] [-c, --compact]
[-h, --highlight-all, -Hpid, --highlight-pid pid] [-g] --show-pgids]
[-l, --long] [-n, --numeric-sort] [-N, --ns-sortns [-p, --show-pids]
[-s, --show-parents] [-S, --ns-changes] [-t, --thread-names]
[-T, --hide-threads] [-u, --uid-changes] [-Z, --security-context]
[-A, --ascii, -G, --vt100, -U, --unicode] [pid, user]
pstree -V, --version
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.
init-+-getty
|-getty
|-getty
`-getty
becomes
init---4*[getty]
Child threads of a process are found under the parent process and are
shown with the process name in curly braces, e.g.
icecast2---13*[{icecast2}]
If pstree 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 will attempt to build the tree without this information,
showing process names as question marks.
-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 for processes but not threads.
-A Use ASCII characters to draw the tree.
-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
available.
-g 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 first.
-l 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.
-n Sort processes with the same ancestor by PID instead of by
name. (Numeric sort.)
-N 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.
-p Show PIDs. PIDs are shown as decimal numbers in parentheses
after each process name. -p implicitly disables compaction.
-s Show parent processes of the specified process.
-S Show namespaces transitions. Like -N, the output is limited
when running as a regular user.
-t Show full names for threads when available.
-T Hide threads and only show processes.
-u 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 process name.
-U 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%@'
-V Display version information.
-Z (SELinux) Show security context for each process. This flag
will only work if pstree is compiled with SELinux support.
/proc location of the proc file system
Some character sets may be incompatible with the VT100 characters.
ps(1), top(1).
This page is part of the psmisc (Small utilities that use the /proc
filesystem) project. Information about the project can be found at
⟨https://gitlab.com/psmisc/psmisc⟩. If you have a bug report for
this manual page, see ⟨https://gitlab.com/psmisc/psmisc/issues⟩.
This page was obtained from the project's upstream Git repository
⟨https://gitlab.com/psmisc/psmisc.git⟩ on 2017-07-05. If you discover
any rendering problems in this HTML version of the page, or you
believe there is a better or more up-to-date source for the page, or
you have corrections or improvements to the information in this
COLOPHON (which is not part of the original manual page), send a mail
to man-pages@man7.org
psmisc 2016-06-18 PSTREE(1)
Pages that refer to this page: ps(1)