At the moment I am ill and I was only for 2 hours at school today.
As a consequence of this I had a little bit more free time so I started
reading my copy of
The art of UNIX programming.
I think for people like me who are only <=20 years old it gives a good overview about the history of
30 years of UNIX development. It is very easy to read and gives good knowledge about all
I passed because of my age.
There is also an online copy on:
http://www.catb.org/~esr/writings/taoup/html/Nevertheless I don't like ESR because of his fable for weapons.