• ps в Википедии

$ ps axuwww

linux$ ps axf

$ ps ax -o pcpu,pid,ppid,user,command

$ man ps

...
       KEY   LONG         DESCRIPTION
       c     cmd          simple name of executable
       C     pcpu         cpu utilization

       p     pid          process ID

       s     size         memory size in kilobytes
       S     share        amount of shared pages

       u     user         user name
       v     vsize        total VM size in KiB
...

freebsd$ pstree

linux$ pstree -p