2
votes
3answers
3k views

How to delete the oldest directory in a given directory? [duplicate]

Possible Duplicate: Shell script for moving oldest files? I have a backup directory that stores x other directories that require backuping. I need something that will run before another ...
6
votes
1answer
2k views

How do I get the difference between two timestamps?

I am creating a simple backup script. I would like to have a message saying "You last backed up x days ago" on login. I can create a file when I do the backup "backup/.last_backup_timestamp" but what ...