I was stuck in a corporate software mess with a compilation of legacy UNIX Script, awk and other languages calling and executing both locally and remotely. With only intermediate experience in UNIX, a rather large pot of coffee and Jerry Peeks UNIX tools I was able to filter through, straighten out, and document the nightmare legacy code within half the time I expected.
The book has an outstanding state of the art, referencing and indexing to key words and commands while you read. I did not find myself flipping back and forth to the index. I was able to get the information very quickly without loosing train of thought. A fantastic book, I have several UNIX books and many in other languages and this one has the best layout and most complete reference.
Only one suggestion... don't let this book go out of print for so long. I had to wait months to get this new version. The old version was sold out all over the US. Maybe I will buy a few extra copies for investment purposes.