Hi,

Can anyone suggest me a good unix scripting book: practical and in-depth?

Thanks

O'Reilly's Perl Cookbook is a pretty good one.
Unix scripting can be done in any language from bash to C. Or I would suggest O'Reilly's Perl Bookshelf (contains the Cookbook) if you are looking to learn perl.

UNIX in a Nutshell: 3rd Edition

http://safari.oreilly.com/?XmlId=1-56592-427-4