I am new in shell scripting and I have to cover bash, ksh and csh.

please somebody suggest me a book.

try the O'Reilly book on Korn shell or any other. the o'reilly is excellent.

Good luck

JK

Then you should change to another course; this one is wasting your valuable time.

The Korn shell (ksh) was a great step forward from the original Bourne (sh) shell but was quickly replaced by the POSIX shell in a great drive to standardise divergent UNIXes. The POSIX shell is closely based on ksh. If portability is important, POSIX shell is arguably the best choice. Others can be argued for too but the case for ksh is weak.

Famously the csh should not be used for serious work for reasons explained in Csh Programming Considered Harmful and Top Ten Reasons not to use the C shell.

Bash is widely used so worth studying. It has become bloated though, so if performance is important other shells such as ash are used so are worth studying rather than ksh or csh.

Hi,


Just a few links to aid you;

Slackware® Essentials
Slackware® Basics
Linux Documentation Project
Rute Tutorial & Exposition
Linux Command Guide
Utimate Linux Newbie Guide
LinuxSelfHelp
Getting Started with Linux
Advanced Bash-Scripting Guide
Linux Home Networking
Virtualiation- Top 10


The above links and others can be found at 'Slackware-Links'. More than just Slackware® links!