Puppet r10k cron job

It seems I'm continually tweaking the cron job that runs r10k on my Puppet Masters.  It's not quite enough to just run r10k deploy environment -pv since we need to make sure a previous run isn't still running.  Sometimes git will hang as well, hanging the whole process indefinitely, so we need to set a timeout to kill the process.  Lastly, there are PATH issues you have to deal with.  Here's my current script that gets called by a cron job in the pe-puppet user's crontab:

#!/bin/bash

PATH=/usr/lib64/qt-3.3/bin:/usr/local/bin:/bin:/usr/bin:/usr/local/sbin:/usr/sbin:/sbin

# Only run if r10k isn't already running, in case a previous run is still going
if ! pgrep -f 'r10k deploy' > /dev/null
then
    timeout -s 9 1200s /usr/local/bin/r10k deploy environment -pv > /tmp/r10k.log 2>&1
fi