Some handy ebooks: http://www.linuxhaxor.net/2009/05/10/10-free-linux-ebooks-for-beginners/ To be honest, not just for beginners. I'll definitely have to try bash's debugging mode... :-) Cheers, Peter -- Peter Reutemann, Dept. of Computer Science, University of Waikato, NZ http://www.cs.waikato.ac.nz/~fracpete/ Ph. +64 (7) 858-5174