Get pid of current subshell

Question

I am trying to get the pid of a currently executing subshell - but $$ is only returning the parent pid:

#!/usr/bin/sh

x() {
  echo \"I am a sub         


        

Answer 1

Environment:

SUSE Linux Enterprise Server 10 SP2 (i586)

GNU bash, version 3.1.17(1)-release (i586-suse-linux) Copyright (C) 2005 Free Software Foundation, Inc.

#!/usr/bin/sh

x() {
  mypid=$(awk 'BEGIN {print PROCINFO["ppid"] ; exit}')
  echo "I am a subshell x echo 1 and my pid is $mypid"
}

y() {
  mypid=$(awk 'BEGIN {print PROCINFO["ppid"] ; exit}')
  echo "I am a subshell y echo 1 and my pid is $mypid"
}


echo "I am the parent shell and my pid is $$"
x &
echo "Just launched x and the pid is $! "

y &
echo "Just launched y and the pid is $! "

wait

Result:

I am the parent shell and my pid is 27645
Just launched x and the pid is 27646
Just launched y and the pid is 27647
I am a subshell y echo 1 and my pid is 27647
I am a subshell x echo 1 and my pid is 27646