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

It is an other solution to get master process ID of a process.Tall, but nice.

pstree -p 1 |grep |sed -n 1p|tr -d "|,-"|sed 's/(/ /g'|sed 's/)/ /g'|tr -d "+"|awk {'print $2'};