Wait until a process matching a particular string starts, then send a notification

waitfor.sh

#!/bin/sh

trap "" HUP

PROCESS_NAME=$1
shift
MESSAGE=$*

until ps -fu $USER | grep "${PROCESS_NAME}" | grep -v grep | grep -v $0 | grep -v waitfor >/dev/null 2>&1; do
        sleep 5
done

notify.sh ${MESSAGE}