draw process tree of 3 commands

Provided by: psmisc_23.3-1_amd64

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          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 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.        

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).        

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Source: https://manpages.ubuntu.com/manpages/focal/en/man1/pstree.1.html

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