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SunOS is a Unix-branded operating system developed by Sun Microsystems for their workstation and server computer systems. The SunOS name is usually only used to refer to versions 1.0 to 4.1.4, which were based on BSD, while versions 5.0 and later are based on UNIX System V Release 4, and are marketed under the brand name Solaris.

History{| class"wikitable"

! SunOS version! Release date! Codebase! Description|Sun UNIX 0.7|1982UniSoft Version 7 Unix>UNIX v7BOOK
, A Quarter Century of Unix
, Salus
, Peter
, Addison-Wesley
, 1994
, 0-201-54777-5
, 199–200,
Motorola 68000>68000-based Sun-1 system. No windowing system.|SunOS 1.0WEB
, Beginners Guide to the Sun Workstation, p 82
, 2016-04-06
, Beginners Guide to the Sun Workstation|Nov 19834.1BSDMotorola 68010>68010-based Sun-1 and Sun-2 systems. Introduced Sun Windowing System.|SunOS 1.1WEB
, Solaris Operating System (Unix)
, 2006-12-14
, Operating System Documentation Project
, Source for SunOS 1.1 and 1.2 as well as release dates for Sunos 2.0, 3.0, 3.2.{{cn|date=March 2015}}|Apr 1984|SunOS 1.2 {{cn>date=March 2015}}|Jan 1985|SunOS 2.0 {{cn>date=March 2015}}|May 1985|4.2BSDNetwork File System (protocol)>NFS protocol, Network Information Service distributed network information system, Remote procedure call>Remote Procedure Call (RPC) / External Data Representation and virtual file system (VFS) layer using vnodes. Coincided with release of Motorola 68020>68020-based Sun-3 hardware. |SunOS 3.0|Feb 1986|4.2BSD + System V IPC|Optional System V tape offered utilities and development libraries.|SunOS 3.2|Sep 1986 Same as 3.0, plus some 4.3BSD|First support for Sun-4 series|SunOS 3.5|Jan 1988||SunOS 4.0|Dec 1988 4.3BSD with System V IPC| New virtual memory system, dynamic linking, automounter, System V STREAMS I/O. Sun386i support.|SunOS 4.0.1|Dec 1988||SunOS 4.0.2|Sep 1989|Sun386i only |SunOS 4.0.3|May 1989||SunOS 4.0.3c|Jun 1989|SPARCstation 1 (Sun-4c) only |SunOS 4.1|Mar 1990||SunOS 4.1e|Apr 1991|Sun-4e only|SunOS 4.1.1|Mar 1990|Bundled with OpenWindows 2.0|SunOS 4.1.1B|Feb 1991||SunOS|Jul 1991||SunOS 4.1.1_U1|Nov 1991|Sun-3/3x only|SunOS 4.1.2|Dec 1991|Support for multiprocessor (SPARCserver 600MP) systems; first CD-ROM-only release.|SunOS 4.1.3|Aug 1992||SunOS 4.1.3C|Nov 1993|SPARCclassic/SPARCstation LX only |SunOS 4.1.3_U1|Dec 1993||SunOS 4.1.3_U1B|Feb 1994|Earliest release for which Y2K compliance patches were available.|SunOS 4.1.4|Nov 1994|Last release of SunOS 4|SunOS 5.x|Jun 1992| SVR4Solaris (operating system)>Solaris article.SunOS 1 only supported the Sun-2 series systems, including Sun-1 systems upgraded with Sun-2 (68010) CPU boards. SunOS 2 supported Sun-2 and Sun-3 (68020) series systems. SunOS 4 supported Sun-2 (until release 4.0.3), Sun-3 (until 4.1.1), Sun386i (4.0, 4.0.1 and 4.0.2 only) and Sun-4 (SPARC) architectures. Although SunOS 4 was intended to be the first release to fully support Sun's new SPARC processor, there was also a SunOS 3.2 release with preliminary support for Sun-4 systems.SunOS 4.1.2 introduced support for Sun's first sun4m-architecture multiprocessor machines (the SPARCserver 600MP series); since it had only a single lock for the kernel, only one CPU at a time could execute in the kernel.The last release of SunOS 4 was 4.1.4 (Solaris 1.1.2) in 1994. The sun4, sun4c and sun4m architectures were supported in 4.1.4; sun4d was not supported.Sun continued to ship SunOS 4.1.3 and 4.1.4 until December 27, 1998; they were supported until September 30, 2003.

"SunOS" and "Solaris"

missing image!
- SunOS 4.1.1 P1270750.jpg -
SunOS 4.1.1 tape
In 1987, AT&T Corporation and Sun announced that they were collaborating on a project to merge the most popular Unix flavors on the market at that time: BSD (including many of the features then unique to SunOS), System V, and Xenix. This would become System V Release 4 (SVR4). On September 4, 1991, Sun announced that its next major OS release would switch from its BSD-derived source base to one based on SVR4. Although the internal designation of this release would be SunOS 5, from this point Sun began using the marketing name Solaris. The justification for this new "overbrand" was that it encompassed not only SunOS, but also the OpenWindows desktop environment and Open Network Computing (ONC) functionality.Even though the new SVR4-based OS was not expected to ship in volume until the following year, Sun immediately began using the new Solaris name to refer to the currently shipping SunOS 4 release (also including OpenWindows). Thus SunOS 4.1.1 was rebranded Solaris 1.0; SunOS 5.0 would be considered a part of Solaris 2.0. SunOS 4.1.x micro versions continued to be released through 1994, and each of these was also given a Solaris 1.x equivalent name. In practice, these were often still referred to by customers and even Sun personnel by their SunOS release names. Matching the version numbers was not straightforward:{| class="wikitable"|+ SunOS 4.1.x / Solaris 1.x / OpenWindows releases! SunOS Version !! Solaris version !! OpenWindows version| 2.0| 2.0| 3.0| 3.0| 3.0_U1| 3.0_U1B| 3.0_414Today, SunOS 5 is universally known as Solaris, although the SunOS name is still visible within the OS itself{{snd}} in the startup banner, the output of the uname command, and man page footers, among other places.Matching a SunOS 5.x release to its corresponding Solaris marketing name is simple: each Solaris release name includes its corresponding SunOS 5 minor version number. For example, Solaris 2.4 incorporated SunOS 5.4. There is one small twist: after Solaris 2.6, the "2." was dropped from the Solaris name and the SunOS minor number appears by itself. The latest Solaris release is named Solaris 11 and incorporates SunOS 5.11.

User interface

{{unreferencedsection|date=February 2010}}GUI environments bundled with earlier versions of SunOS included SunTools (later SunView) and NeWS. In 1989, Sun released OpenWindows, an OPEN LOOK-compliant X11-based environment which also supported SunView and NeWS applications. This became the default SunOS GUI in SunOS 4.1.1.

See also



External links

{{Sun Microsystems}}{{Unix-like}}

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