fs/skeleton/bin/psback

#!/bin/sh
# Trace the list of parent processes from here back to 'init'.
pid=$PPID
out=
while [ "$pid" -gt 0 ]; do
  read ppid cmd <<-EOF
	$(ps -o ppid=,comm= $pid)
	EOF
  out=$cmd.$out
  pid=$ppid
done
echo "${out%.}"