Always remember to use the complete path in your CRON scripts. The script below will check to see if your server can ping a router, if it fails it will restart your network. This scripts works on Red Hat based Linux systems like CentOS and Fedora.
( ! /bin/ping -c1 $ROUTER_IP >/dev/null 2>&1 ) && /etc/rc.d/init.d/./network restart
I am posting this to my blog as a reminder to myself (and others if this shows up in a search) to always use the full path to files when you use them in a CRON. You can always run the script the command line as some user and it will work. When you put it in the CRON it will fail.
What the heck is a Padawan?