ps: Clean way to only get parent processes?

Question

I use ps ef and ps rf a lot.

Here is a sample output for ps rf:

  PID TTY      STAT   TIME COMMAND
 3476 pts/0         


        

Answer 1

Another solution (from here):

ps -ocommand= -p $PPID | awk -F/ '{print $NF}' | awk '{print $1}'