1. A public domain version of the Korn shell PD-ksh is a mostly complete AT&T ksh look-alike (see NOTES file for a list of things not supported). Work is currently underway to make it fully compatible with both POSIX and AT&T ksh (when the two don't conflict). Since pdksh is free and compiles and runs on most common unix systems, it is very useful in creating a consistent user interface across multiple machines. For example, in the CS department of MUN, pdksh is installed on a variety of machines including Suns, HPs, DecStations, PCs running Linux, etc., and is the login shell of ~4500 users. From Debian 3.0r0 APT