Most of what we learn is by making mistakes and by seeing how
things can go wrong. These exercises are made to get you to read
some error messages. The order in which you do these exercises is
Don't forget to use the Bash features on the command line: try
to do the exercises typing as few characters as possible!
2.5.1. Connecting and disconnecting
Determine whether you are working in text or in graphical
I am working in text/graphical mode. (cross out what's not
Log in with the user name and password you made for yourself
during the installation.
Log in again, using a non-existent user name
-> What happens?