$ whatis ptree

The set of commands that work on proc (psudo) based file systems. The list of ptools are: proc, pflags, pcred, pldd, psig, pstack, pfiles, pwdx, pstop, prun, pwait, ptime - proc tools

Examples:

1. ptree $$
2. ptree 1
3. ptree 2

Please click on " man ptree. " to see the Manual Page for this command.