pstree

list processes as a tree

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  1. Package version
    pstree-2.40
  2. Maintainer
    The OpenBSD ports mailing-list

This is pstree. It is a small program that shows the ps
listing as a tree (as the name implies...). It has several options
to make selection criteria and to change the output style.

For that it uses the output of /bin/ps.