words of wisdom from a systems engineer

Rebuild RPM file permissions and ownerships

If you find that someone has done a recursive chmod or chown on a server, don’t fret. You can set almost everything back to its original permissions and ownership by doing the following:

rpm -qa | xargs rpm --setperms --setugids

Depending on how many packages are installed as well as the speed of your disk I/O, this may take a while to complete.