Can you trust your backups?

It is a good practice to check the integrity of your backups from time to time. You don't want something like this happening to you :)

time gunzip  -f -v entrieva/db4/guestbook_M-070507.tar.gz
entrieva/db4/guestbook_M-070507.tar.gz:
gunzip: entrieva/db4/guestbook_M-070507.tar.gz: unexpected end of file

real    67m56.782s
user    48m40.006s
sys     14m14.584s