#!/bin/bash

pidno=$( ps ax | grep /usr/bin/mythbackend | grep -v grep | grep -v mythbackend_monitor)
# Checks for pid in "ps" listing, field #1.
# Then makes sure it is the actual process, not the process invoked by this script.
# The last "grep $1" filters out this possibility.
if [ -z "$pidno" ]  # If, after all the filtering, the result is a zero-length string,
then                # no running process corresponds to the pid given.
  echo "No such process running."
  mail david@thewhytehouse.org -s "MythTV Restart" < /var/log/mythtv/mythbackend.log
  /etc/init.d/mythtv-backend restart
fi