Automounting a specific partition on secondary drive

[solwic]

I'm using rsync and crontab to do automatic backups from my /home partition on /dev/sda to my backup drive /dev/sdb3. The backup partition is ext4.

But the backup partition (sdb3) is obviously on a secondary drive, and I want to automount it when I log in. I read that you have to edit /etc/fstab to do this, but I'm not familiar with the process and can't find clear enough instructions, so I was wondering if someone could give me the command I need and maybe explain how it works?

Any help is appreciated.

Thanks!

[solwic]

Actually, scratch that. I found the answer here.

I still don't understand the command, but I can rtfm for that.

Thanks anyway.