Hello Everyone,
Over the last few months I have begun to expand my programing skills from windows, Java and SQL / PL-SQL programing into the wonderful world of shell scripting. With little training budget my only options for training are books, Internet and this site (BTY this site is great and has already saved me a few times 
). With regards to books what do you think the required reading list for good shell programmers should be. Currently, my focus is Korn shell, regular expressions and awk but I would be interested in any opinions you may have.
Thanks in advance.
C.