#!/bin/bash
PIDS=$(pidof mythfrontend)
P_array=( $PIDS )
let "instances = ${#P_array[*]}"  # Count elements.

if [ $instances -gt 0 ];
then
    if [ $instances -eq 1 ]; then
        diagtext="is already a MythFrontend"
    else
        diagtext="are already $instances MythFrontends"
    fi
    if ! xmessage -buttons "Start Another MythFrontend":1,"Don't Start MythFrontend":0 -default "Don't Start MythFrontend" -center -timeout 30 "There $diagtext running.        
Do you really want to start another one?"; then
        mythfrontend --logfile /var/log/mythtv/mythfrontend.log
    fi
else
    mythfrontend --logfile /var/log/mythtv/mythfrontend.log
fi