Linda Mui

If you're not actually writing code, but you are needing to manage systems running X Windows, this is the book for you. If you are trapped into supporting SCO systems, there are life saving hints in these pages. If you're trying to understand the intricacies of xdm, there's help in these pages. It's a book I still use, now and then.

This was published more than *20* years ago, and yet it's still useful. There aren't a lot of technical books that you can say that about after even five years.

Indispensable reference to perl. Absolute must for any developer who write perl code or scripts.