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microsoft posix subsystem wikipedia sep oct nov 14 2021 2022 2023 success fail about this capture timestamps the wayback machine http web archive org web 20221014211938 https en wikipedia org wiki microsoft_posix_subsystem microsoft posix subsystem from wikipedia the free encyclopedia jump to navigation jump to search subsystem shipped with the first versions of windows nt microsoft posix subsystem developer s microsoft initial release july 27 1993 29 years ago 1993 07 27 operating system microsoft windows platform ia 32 alpha mips powerpc successor windows services for unix standard s posix 1 standard ieee std 1003 1 1990 iso iec 9945 1 1990 type compatibility layer microsoft posix subsystem is one of four subsystems shipped with the first versions of windows nt the other three being the win32 subsystem which provided the primary api for windows nt plus the os 2 and security subsystems this subsystem implements only the posix 1 standard also known as ieee std 1003 1 1990 or iso iec 9945 1 1990 primarily covering the kernel and c library programming interfaces which allowed a program written for other posix 1 compliant operating systems to be compiled and run under windows nt the windows nt posix subsystem did not provide the interactive user environment parts of posix originally standardized as posix 2 that is windows nt did not provide a posix shell nor any unix commands like ls the nt posix subsystem also did not provide any of the posix extensions that postdated the creation of windows nt 3 1 such as those for posix threads or posix ipc the nt posix subsystem was included with the first versions of windows nt because of 1980s us federal government requirements listed in federal information processing standard fips 151 2 1 briefly these documents required that certain types of government purchases be posix compliant so that if windows nt had not included this subsystem computing systems based on it would not have been eligible for some government contracts windows nt versions 3 5 3 51 and 4 0 were certified as compliant with fips 151 2 the runtime environment of the subsystem is provided by two files psxss exe and psxdll dll a posix application uses psxdll dll to communicate with the subsystem while communicating with posix exe to provide display capabilities on the windows desktop the posix subsystem was replaced in windows xp and windows server 2003 by windows services for unix 2 sfu which is based in part on openbsd code and other technology developed by interix a company later purchased by microsoft 3 4 5 6 sfu was removed from later versions of windows 8 and windows server 2012 sfu is logically though not formally replaced by the windows subsystem for linux 7 wsl in the windows 10 anniversary update and windows server 2016 version 1709 8 9 respectively see also edit mks toolkit uwin cygwin unxutils windows subsystem for linux references edit federal information processing standards publication 151 2 archived from the original on 2014 02 20 retrieved 2008 09 03 posix and os 2 are not supported in windows xp or in windows server 2003 archived from the original on 2013 03 28 dohnert roberto j 2004 01 21 review of windows services for unix 3 5 osnews david adams archived from the original on 2008 02 11 reiter brian 2010 01 26 wontfix select 2 in sua 5 2 ignores timeout brianreiter org microsoft acquires softway systems to strengthen future customer interoperability solutions microsoft news center microsoft 1999 09 17 milltech consulting inc 2019 hammons jack 22 april 2016 windows subsystem for linux overview microsoft developer network msdn microsoft retrieved 21 december 2016 turner rich 9 august 2017 wsl arrives on windows server microsoft developer network msdn rich turner of microsoft retrieved 8 march 2018 cooley sarah install the linux subsystem on windows server microsoft docs microsoft retrieved 8 march 2018 further reading edit russinovich mark david solomon december 8 2004 microsoft windows internals fourth edition ed microsoft press isbn 0 7356 1917 4 v t e microsoft windows components management tools app installer command prompt control panel applets device manager disk cleanup drive optimizer driver verifier dxdiag event viewer iexpress management console netsh performance monitor recovery console resource monitor settings sysprep system configuration system file checker system information system policy editor system restore task manager windows error reporting windows ink windows installer powershell windows update windows insider winre wmi apps 3d viewer alarms clock calculator calendar camera character map cortana edge fax and scan feedback hub get help magnifier mail maps messaging media player windows 11 movies tv mobility center money news narrator notepad onedrive onenote paint paint 3d people phone link photos quick assist snipping tool speech recognition skype sports sticky notes store tips voice recorder weather wordpad xbox app shell action center aero autoplay autorun cleartype explorer search indexing service ifilter saved search namespace special folder start menu taskbar task view windows spotlight windows xp visual styles services service control manager bits clfs multimedia class scheduler shadow copy task scheduler error reporting wireless zero configuration file systems cdfs dfs exfat ifs fat ntfs hard link links mount point reparse point txf efs refs udf server domains active directory dns group policy roaming user profiles folder redirection distributed transaction coordinator msmq windows media services active drm services iis wsus sharepoint network access protection pws dfs replication print services for unix remote desktop services remote differential compression remote installation services windows deployment services system resource manager hyper v server core architecture architecture of windows nt startup process nt nt 6 csrss desktop window manager portable executable exe dll enhanced write filter graphics device interface hal dll i o request packet imaging format kernel transaction manager library files logical disk manager lsass minwin ntldr ntoskrnl exe object manager open xml paper specification registry resource protection security account manager server message block shadow copy smss system idle process user whea win32 console winlogon winusb security security and maintenance applocker bitlocker credential guard data execution prevention family safety kernel patch protection mandatory integrity control protected media path user account control user interface privilege isolation windows defender windows firewall compatibility command com wow64 windows subsystem for linux api active scripting wsh vbscript jscript com activex activex document com structured storage dcom ole ole automation transaction server directx net universal windows platform windows mixed reality windows runtime winusb games solitaire collection surf discontinued games 3d pinball chess titans freecell hearts inkball hold em purble place spider solitaire solitaire tinker apps activemovie anytime upgrade address book backup and restore cardfile cardspace cd player chat contacts desktop gadgets diagnostics drivespace dvd maker easy transfer fax food drink groove music help and support center health fitness hyperterminal imaging internet explorer journal media center meeting space messaging messenger mobile device center movie maker msn dial up netmeeting ntbackup outlook express phone companion photo gallery photo viewer program manager steps recorder syskey travel winhelp write others scandisk file protection media control interface next generation secure computing base posix subsystem hpfs interix video for windows virtual dos machine windows on windows windows sideshow windows services for unix windows system assessment tool windows to go winfs spun off to microsoft store dvd player file manager hover mahjong minesweeper defunct pay category list v t e unix windows interoperability unix like subsystems cygwin microsoft posix subsystem windows services for unix interix windows subsystem for linux wsl 1 development environments and shells djgpp hamilton c shell mingw mingw w64 mks toolkit powershell uwin ports of unix like utilities for windows gnuwin32 unxutils windows runtime environments for nix wabi willows toolkit for unix wine wine etersoft cedega crossover darwine proton platform virtualization software cooperative linux merge topologilinux windows subsystem for linux wsl 2 related apiw captive ntfs ndiswrapper windows interface source environment this microsoft windows article is a stub you can help wikipedia by expanding it v t e retrieved from https en wikipedia org w index php title microsoft_posix_subsystem oldid 1095102347 categories windows components posix compatibility layers microsoft windows stubs hidden categories articles with short description short description matches wikidata all stub articles navigation menu personal tools not logged in talk contributions create 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