On 04/24/15 05:59, Les Mikesell wrote: > The original ksh wasn't open source and might even have been an > extra-cost item in AT&T unix. And the early emulations weren't > always complete so you couldn't count on script portability. I > generally thought it was safer to use perl for anything that took more > than bourne shell syntax. You're right about the extra cost. In 1989 I bought the ksh source code from AT&T for $100. Jack