SUNOS

'SunOS' is a version of the Unix 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 of SunOS. These versions were based on BSD Unix, while SunOS version 5.0 and later are based on UNIX System V Release 4, and are marketed under the brand name Solaris.

Contents

History

"SunOS" and "Solaris"

User interface

References

See also

External links

History

'SunOS version'	'Release date'	'Code base'	Description
'Sun UNIX 0.7'	1982	UniSoft UNIX v7[1]	Bundled with 68000-based Sun-1 system
'SunOS 1.0'	1983	4.1BSD	Support for 68010-based Sun-1 and Sun-2 systems
'SunOS 1.1'[2]	Apr 1984
'SunOS 1.2'	Jan 1985
'SunOS 2.0'	May 1985	4.2BSD	Introduced virtual file system (VFS) layer and the NFS protocol
'SunOS 3.0'	Feb 1986	4.2BSD + System V IPC	coincided with release of 68020-based Sun-3 series. 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, System V STREAMS I/O. Sun386i support.
'SunOS 4.0.1'	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 4.1.1.1'	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 1 and 2 supported the Sun-2 series systems, including Sun-1 systems upgraded with Sun-2 (68010) CPU boards. SunOS 3 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"

In the late 1980s, AT&T 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 UNIX 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 rechristened '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:

'SunOS 4.1.''x'' / Solaris 1.''x'' / OpenWindows Releases'

SunOS Version	Solaris Version	OpenWindows Version
4.1.1 4.1.1B 4.1.1.1	1.0	2.0
4.1.2	1.0.1	2.0
4.1.3	1.1 SMCC Version A	3.0
4.1.3C	1.1C	3.0
4.1.3_U1	1.1.1	3.0_U1
4.1.3_U1B	1.1.1B	3.0_U1B
4.1.4	1.1.2	3.0_414

Today, SunOS 5 is universally known as Solaris, although the SunOS name is still visible within the OS itself—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 ' Solaris 10' and incorporates SunOS 5.10.

User interface

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.

References

1. A Quarter Century of Unix, , Peter, Salus, Addison-Wesley, 1994, ISBN 0-201-54777-5
2. Solaris Operating System (Unix) Source for SunOS 1.1 and 1.2 as well as release dates for Sunos 2.0, 3.0, 3.2.

See also

★ Comparison of BSD operating systems

★ Comparison of operating systems

★ Unix wars

External links

★ The Sun Hardware Reference (Overview)

★ SunOS & Solaris Version History

★ ''An Introduction to Solaris'' — a sample chapter from ''Solaris Internals: Core Kernel Architecture'' by Jim Mauro & Richard McDougall, Prentice-Hall, 2000. (PDF)

★ Info on SunOS from OSdata (last updated February 17, 2002)

★ Initial Solaris announcement