Today, I dug out an old Lex Light fanless PC which I haven't used for years. The first thing I had to do was find out the version of Debian it was running which I normally do by checking the contents of the sources.list file. I wondered if there was an easier way to find out the current version and indeed there is:
I don't know why I never noticed that file before.
After a bit more searching online I discovered there was another way to find this information (and more):
No LSB modules are available.
Distributor ID: Debian
Description: Debian GNU/Linux testing (wheezy)
You learn something new every day!