Redhat – Run as different user

I prefer to have each application service run as its own user in order to have as much isolation between them as possible. If any part of the system gets broken or compromised I'd like to localise the damage as much as possible.

For the distributions you mention:

On CentOS 5.4 (Should be same for RHEL5)

grep run-parts /etc/crontab

01 * * * * root run-parts /etc/cron.hourly
02 4 * * * root run-parts /etc/cron.daily
22 4 * * 0 root run-parts /etc/cron.weekly
42 4 1 * * root run-parts /etc/cron.monthly

So cron.daily runs at 04:02am.

Same on CentOS 4.8