$! - return last option to the previous command

Thanks sir

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can u tell me which one is more power full..ksh ya bsh??

Also, someone mentioned the korn shell autocompletion tip "\" + "=" and that lists the matches to the given pattern in a numbered list. Can you recall the match by the given number?

/# ls /bin/perl
1) perl
2) perlbug
3) perlcc
4) perldoc
5) perlivp
/# ls /bin/perl

Bash rules. I hate csh with passion

I honestly never tried anything else than ksh ... does the job and is the native choice for AIX as far as I know

Kind regards
zxmaus

I love sh, but bash is better in my opinion!

I prefer ksh93. I do not mind bash for interactive use and I suspect that many users use it mostly in that fashion. However for scripting work I try to use ksh93 whenever possible. It knows features like e.g. advanced job control, associative arrays, a.b. variables, call by value and call by name in functions, the way it handles locality in loops and floating point arithmetic. Plus (big plus) in my experience ksh93 really is a lot faster then any other shell I know.