This is a course I gave privately to some friends. You can still do the exercises, even if you didn’t take part in the course.
Background info
Here’s a good history of Unix.
You’ll need to have a server login to do the exercises – or your own Linux installation.
To connect to my server, use ssh <your_username>@b3rlin.net. If I haven’t given you a login, then you can’t do this!
By the way: if you get your password wrong three times in a row, your IP address will be blacklisted for 30mins! If this happens you must be patient.