bash scripting chkconfig, chmod, and chown
 

I'm trying to write a simple(ler) bash script to does a mass changes in ~200 chmods, ~200 chowns, ~60 chkconfigs on 400+ systems. There's no real uniformity to any one of the three areas. I'm actually typing it in a very simplistic way...

===
sample code
===
#!/bin/bash

if [ ! $UID -eq 0 ]; then
echo "This script must be run as root."
exit 1
fi


/sbin/chkconfig nfs on
/sbin/chkconfig sendmail off

...

chmod 400 /etc/at.allow
chown root:root /etc/at.allow
chmod 600 /etc/at.deny
chown root:root /etc/at.deny
chown lp:sys /etc/cups/cupsd.conf

...


Again this is a simplified and truncated form of my script. Any help or advice would be appreciated!

Given ~400 systems, you might want to log the output from the script and diff it against expected output to identify any exceptions.

Perhaps pedantically, the command id -u is more robust than depending on $UID.