AIX

if you need is 'scripting', I'd start with the simple Cygwin (http://cygwin.com/) under Windows.

I am using Datastage(Datawarehouse) tool. where I need to use shell script for jobs execution and deletion etc.

---------- Post updated at 05:33 PM ---------- Previous update was at 05:32 PM ----------

@vgersh99

I tried it. but it showing bash script. My shell script is not working there.

what shell interpreter your script is written in? (ksh?)
what exactly not working?
you can get ksh (if that's the innterpreter you script is written in) for cygwin as well....

Bash is a Bourne-compatible shell.

In what way is it "not working"?

For example:
You can see the commands I need to use in this page.

DEV'S DATASTAGE TUTORIAL,GUIDES,TRAINING AND ONLINE HELP 4 U. UNIX, ETL, DATABASE RELATED SOLUTIONS: Unlock Datastage Jobs using Commands

These are DS specific commands - it's got nothing to do with practicing shell scripting.
So I'm not sure what your objective here is....
Sorry...

BASH is BASH, Datastage is Datastage. To run Datastage commands in BASH, you must have Datastage. If you don't have Datastage, BASH will not be able to find Datastage, and Datastage will not run. This isn't a flaw or fault in your shell.

Datastage is an IBM product. It probably requires -- or possibly comes with -- AIX, like you originally thought. So: You are not looking for shell scripting training, you're looking for very specialized AIX training. This is beyond my scope of experience. I will move this to the AIX forum and wish you better luck there. It's likely that you're going to be running commands through a terminal, logging into someone else's AIX machine remotely.

You might find general shell scripting experience useful, by the way, rather than jumping into the deep end by learning how one particular application works inside it.