This script go over all Qmail mailboxes and removes oldest emails from accounts that are over 250MB in size and removes 5MB worth of emails.
Works ok PLESK systems on CentOS. Read More
$ cron-config
Do you want to remove or reinstall it (yes/no) yes
Do you want to install the cron daemon as a service? (yes/no) yes
Enter the value of CYGWIN for the daemon: [ ] ntsec
Do you want the cron daemon to run as yourself? (yes/no) no
Do you want to start the cron daemon as a service now? (yes/no) yes
This syncs my laptop with my NAS every day at midnight. I also have a task in my windows Task Manager to wake the laptop from sleep at that time to do the sync. So I can sleep, without worry.