MS-DOS (Microsoft Disk Operating System) is a clone of CP/M for the 8088 put together in six weeks by hacker Tim Paterson, who is said to have regretted it ever since. It has numerous features, including vaguely UNIX-like but rather broken support for subdirectories, I/O redirection, and pipelines, were hacked into version 2. 0 and subsequent versions; as a result, there are two or more incompatible versions of many system calls, and MS-DOS programmers can never agree on basic things like what character to use as an option switch or whether to be case-sensitive. The resulting mess is now the highest-unit-volume OS in history. Often known simply as DOS, which annoys people familiar with other similarly abbreviated operating systems (the name goes back to the mid-1960s, when it was attached to IBM's first disk operating system for the 360). The name further annoys those who know what the term operating system does (or ought to) connote; DOS is more properly a set of relatively simple interrupt services. Research MS-DOS
Rogue is a Dungeons-and-Dragons-like game using character graphics, written under BSDUNIX and subsequently ported to other UNIX systems and MS-DOS. The original BSD `curses(3)' screen-handling package was hacked together by Ken Arnold to support `rogue(6)' and has since become one of UNIX's most important and heavily used application libraries. Nethack, Omega, Larn, and an entire subgenre of computerdungeongames all took off from the inspiration provided by `rogue(6)'. Research Rogue
Abbreviations
Research MS-DOS
