Provided by: psmisc_22.15-2ubuntu1_amd64 bug


       pstree - display a tree of processes


       pstree [-a|--arguments] [-c|--compact] [-h|--highlight-all|-Hpid|--highlight-pid pid]
       [-l|--long] [-n|--numeric-sort] [-p|--show-pids] [-s|--show-parents] [-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.




       Child threads of a process are found under the parent  process  and  are  shown  with  the
       process name in curly braces, e.g.


       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.


       -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.

       -l     Display  long lines. By default, lines are truncated to the display width or 132 if
              output is sent to a non-tty or if the display width is unknown.

       -n     Sort processes with the same ancestor by PID instead of by name. (Numeric sort.)

       -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.

       -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 '\033%8' and left with echo -e '\033%@'

       -V     Display version information.

       -Z     (SELinux)  Show  security  context  for  each  process. This flag will only work if
              pstree is compilied with SELinux support.


       /proc     location of the proc file system


       Werner Almesberger <> Craig Small <>


       Some character sets may be incompatible with the VT100 characters.


       ps(1), top(1).