Shell Programming and Scripting

Looks like your login shell is ksh.
I have to admit that I don't really understand your problem. Why do you ask if you vave to "convert sh /ksh to bash" if ALL your scripts should be running flawlessly with ksh as login shell? Both ksh and bash will run sh scripts as is as they offer a superset of sh syntax.
Where exactly do you run into problems?

If your scripts are all written in ksh already, you should insist all your systems are installed with ksh in addition to bash. It will cost your company next to nothing compared with testing and modifying each script.

Andrew

Yes, if you want ksh, install ksh. It's significantly different from both BASH and SH, in ways that might not matter or might fundamentally alter how your scripts are written (pipe subshell ordering).

Note there is more than one kind of ksh. There's crusty old-fashioned ksh88, which your distro likely has as pdksh, and modern fuller featured ksh93.

I didn't work a lot in ksh - as I said, I'm a Zsh guy - and do not know where ksh shines over bash. I would be surprised if in your case one had a noticeable performance advantage over the other.

If the choice is between bash and ksh, and money is and issue, you might argue in favour of bash, because this is by default installed on virtually any system I know. If you transfer your application to a new host, it might be that you would have to install ksh first, and since people don't do it in their free time, it indeed costs a litte bit.

Also, if you get stuck somewhere and search for help on the Net, many more people know bash than ksh (or Zsh, for this matter), and can help you. Still, given that bash and ksh have a lot in common, this is a small advantage.

So, my recommendation: First try to find on the Net a page comparing the features of ksh and bash. If you don't find anything which, in your opinion, is a big advantage for ksh, you don't make a mistake when going for bash.

Hi.

I use mostly bash and some ksh. However, there are many more shells, several of which are special purpose, and many look interesting. For example, fish shell is cross-platform and seems to have a lot of features for interactive work. Here is a list with links:

Linux Links - The Linux Portal: Software/Shells

and here is a detailed comparison of the most-often encountered shells:

Comparison of command shells - Wikipedia

Best wishes ... cheers, drl