NAME

       pstree - display a tree of processes

SYNOPSIS

       pstree [-a, --arguments] [-c, --compact-not] [-C, --color attr] [-g, --show-pgids]
       [-h, --highlight-all, -H pid, --highlight-pid pid] [-l, --long] [-n, --numeric-sort] [-N, --ns-sort ns]
       [-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

DESCRIPTION

       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.

OPTIONS

       -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.

       -C     Color the process name by given attribute. Currently pstree  only  accepts  the  value  age  which
              colors  by  process age.  Processes newer than 60 seconds are green, newer than an hour yellow and
              the remaining red.

       -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.

       -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.

       -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 parent 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, time, 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     Show the current security attributes of the process. For SELinux systems this will be the security
              context.

FILES

       /proc  location of the proc file system

BUGS

       Some character sets may be incompatible with the VT100 characters.

SEE ALSO

       ps(1), top(1), proc(5).

psmisc                                             2021-01-05                                          PSTREE(1)