Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Pages: 86. Chapters: BeOS, OS/2, NeXTSTEP, RSX-11, Multics, UCSD Pascal, 386BSD, TRIPOS, IBM PC DOS, Kent Applicative Operating System, AtheOS, SunOS, RSTS/E, OpenSolaris, Mac OS X Tiger, System 7, Mac OS 9, Mac OS 8, System 6, Acorn MOS, Apple DOS, Apple ProDOS, Newton OS, Ultrix, 86-DOS, Atari DOS, ORVYL and WYLBUR, Mac OS X v10.2, Banyan VINES, Apple SOS, Mac OS X v10.0, Rhapsody, Atari TOS, Domain/OS, Mac OS X v10.1, Mac OS X Panther, Plurix, THE multiprogramming system, A/UX, ARX, RISC iX, TSS/360, Coherent, M-DOS, Research Unix, Sprite, MagiC, Version 7 Unix, Sinclair QDOS, Project Monterey, BSD/OS, Apple Pascal, Version 6 Unix, University of Michigan Executive System, Apple GS/OS, Amiga Unix, Not Another Completely Heuristic Operating System, MIPS RISC/os, UniFLEX, Idris, UNIX/32V, Ancient UNIX, SMSQ/E, GM-NAA I/O, LUnix, MDOS, TUNIS, UNIX System III, Transaction Management eXecutive, CatOS, BLIS/COBOL, MNOS, Version 8 Unix, CDC SCOPE, VSTa, CDC KRONOS, USIX, IBM Academic Operating System, Eumel, nOS, Minix-vmd, CB UNIX, Xerox Operating System, Minerva, Operating System Projects, HPBSD, Wollongong Unix, Atlas Supervisor, Universal Time-Sharing System, Version 10 Unix, Versados, Version 9 Unix, SMS2, PC-UX, JexeOS. Excerpt: OS/2 is a computer operating system, initially created by Microsoft and IBM, then later developed by IBM exclusively. The name stands for "Operating System/2," because it was introduced as part of the same generation change release as IBM's "Personal System/2 (PS/2)" line of second-generation personal computers. OS/2 is no longer marketed by IBM, and IBM standard support for OS/2 was discontinued on 31 December 2006. Currently, Serenity Systems International sells OS/2 under the brand name eComStation. OS/2 was intended as a protected mode successor of PC-DOS. Notably, basic system calls were modeled after MS-...