Does FlagShip install and run on DOS and then create file which I move to run on a Unix Machine?
No! FlagShip is a true Development System including a Language and Database for Unix. It installs on the Unix System. The Clipper compatibility, and FlagShip’s use as a porting tool for Clipper code is actually a side effect of what it really is; a high-powered Programming Language & Database Development System for use on Unix. FlagShip code that you have created on one Unix System can be moved and compiled by FlagShip on any other Unix system without changes, so long as you have the FlagShip libraries for the target system. So FlagShip is not a porting tool, but it can certainly be used as one!