#!/bin/sh set -x > /usr/spool/mail/test.local echo "Forward to test.local" > /usr/spool/mail/test.forward echo "Pipe to cat > /tmp/test.mail" > /usr/spool/mail/test.pipe chmod 644 /usr/spool/mail/test.pipe mail test.local <>>test.local<<<" cat /usr/spool/mail/test.local echo ">>>test.mail<<<" cat /tmp/test.mail