file systems

Mastering UNIX Shell Scripting is a must for all Unix Administrator. The beauty of this book is it teaches shell script with practical examples which are required in day to day life of a System Admin. Unlike many shell scripting book it just not talks about syntax but also explains whats happening behind the curtain.
Inspite of all praises the reason for giving 4 stars is due to the fact that its not meant for beginners. For serious shell script writers this book deserve 5 star rating

We wanted to automate a couple of tasks at the Unix level.
So I went looking for a Unix Shell script book. This books covers learning by doing. Real Life examples can be used and are not of the "Hello World" type. By covering on skill at a time and building on the previous skill you can learn how to shell script quickly

If you are interested in Bourne or Bash shell programming, be aware that this book focuses exclusively on the Korn shell (ksh or "ksh93"). The Korn shell is a superset of the Bourne shell, but if you want to write scripts for sh (Bourne) or bash, another book might be more appropriate.