GAP runs on a large number of different operating systems. It behaves slightly different on each of those. This chapter describes the behaviour of GAP, the installation, and the options on some of those operating systems.
Currently it contains sections for UNIX (see GAP for UNIX), which GAP for MS-DOS), which is one operating system on IBM PC compatibles, and TOS (see GAP for TOS), which is the operating system on Atari ST and MacOS (see GAP for MacOS), which is the operating system on Apple Macintosh computers.
For other systems the section Porting GAP gives hints how to approach such a port.