This is intended to clean up a CentOS or RedHat 6 box for conversion to a template in VMWare or other environments. It should be the last thing run before shutting down.

cleanCentOStemplate.sh

#!/bin/bash

# This is intended to clean up a CentOS or RedHat 6 box for
# conversion to a template in VMWare or other environments

# Free to use as a reference document, check before you use this
# as I can't take responsibility if it breaks something

# You may want to simply delete the config files,
# I prefer to just remove the MAC record
echo "Removing HWADDR lines from network configuration files (eth0-15)"
sed -i /HWADDR.*$/d /etc/sysconfig/network-scripts/ifcfg-eth[0-15]

echo "Removing udev rules with MAC associations"
rm /etc/udev/rules.d/70-persistent-net.rules