Editing Compatible Time-Sharing System (section)

==Influences==
CTSS was described in a paper presented at the 1962 [[Joint Computer Conference|Spring Joint Computer Conference]], and greatly influenced the design of other early time-sharing systems.

[[Maurice Wilkes]] witnessed CTSS and the design of the [[Titan (1963 computer)|Titan Supervisor]] was inspired by that.<ref>{{cite book |chapter=The Titan Influence |last=Hartley |first=David |author-link=David Hartley (computer scientist) |title=Computer Systems |isbn=978-0-387-21821-2 |pages=103–108 |date=2004 |publisher=Springer |citeseerx=10.1.1.14.9546 |quote=Sir Maurice, as he is known today, had been inspired by CTSS to create a time-sharing system}}</ref><ref>{{cite book |chapter=An Historical Connection between Time-Sharing and Virtual Circuits |last=Fraser |author-link=Alexander G. Fraser |first=Sandy |title=Computer Systems |isbn=978-0-387-21821-2 |pages=85–88 |date=2004 |publisher=Springer |citeseerx=10.1.1.14.9546 |quote=Maurice Wilkes discovered CTSS on a visit to MIT in about 1965, and returned to Cambridge to convince the rest of us that time-sharing was the way forward}}</ref>

[[Dennis Ritchie]] wrote in 1977 that UNIX could be seen as a "modern implementation" of CTSS.<ref>{{cite conference |last=Ritchie |first=Dennis M. |author-link=Dennis Ritchie |year=1977 |title=The Unix Time-sharing System: A retrospective |conference=Tenth Hawaii International Conference on the System Sciences |url=https://www.bell-labs.com/usr/dmr/www/retro.pdf |access-date=2022-02-19 |archive-date=2022-10-09 |archive-url=https://ghostarchive.org/archive/20221009/https://www.bell-labs.com/usr/dmr/www/retro.pdf |url-status=live }}</ref>  Multics, which was also developed by Project MAC, was started in the 1960s as a successor to CTSS – and in turn inspired the development of Unix in 1969. One of the technical terms inherited by these systems from CTSS is ''[[daemon (computing)|daemon]]''.

[[Incompatible Timesharing System]] (ITS), another early, revolutionary, and influential MIT time-sharing system, was produced by people who disagreed with the direction taken by CTSS, and later, Multics; the name was a [[parody]] of "CTSS", as later the name "Unix" was a parody of "Multics".<ref name="LevyWL">{{cite book|title=Hackers: Heroes of the Computer Revolution - 25th Anniversary Edition|date=2010|publisher=O'Reilly Media|isbn=978-1-4493-8839-3|edition=1st|location=Sebastopol, California|pages=85–102|chapter=Winners and Losers|last=Levy|first=Steven}}</ref> CTSS and ITS file systems have a number of design elements in common.  Both have an M.F.D. (master file directory) and one or more U.F.D. (user file directories). Neither of them have nested directories (sub-directories). Both have file names consisting of two names which are a maximum of six-characters long.  Both support linked files.<ref name="ctsspg69" />