I am in need of two separate files that I can save independe

I am in need of two \"separate\" files that I can save independently of each other written from beginning to end. A crontab and an associated bash file that will delete all user\'s trash every night at 10 p.m. I need to be able to attach both files to an email.

Solution

Using rsync to make a backup
->Basics
->Using the --delete flag
->Be lazy: use cron

Incremental backups with rsync
->Review of hard links
->Using cp -al
->Putting it all together

Isolating the backup from the rest of the system
->The easy (bad) way
->Keep it on a separate partition
->Keep that partition on a separate disk
->Keep that disk on a separate machine
Making the backup as read-only as possible
->Bad: mount/unmount
->Better: mount read-only most of the time
->Tempting but it doesn\'t seem to work: the 2.4 kernel\'s mount --bind
->My solution: using NFS on localhost

Extensions: hourly, daily, and weekly snapshots
->Keep an extra script for each level
->Run it all with cron

Known bugs and problems
->Maintaining Permissions and Owners in the snapshots
->mv updates timestamp bug
->Windows-related problems