【前言】SUN的操作系统的叫法通常有两种，有时叫Solaris，有时叫SunOS，很多人对Solaris操作系统以及SunOS这两种叫法感到非常的迷惑，到底哪个是哪个啊？以下资料来自SUN网站的官方说明，希望对大家有所帮助。
Solaris OS 和 SunOS Software 的比较
* SunOS software--A base operating system
SunOS software is Sun's version of the UNIX[R] platform.
* Solaris OS--A product composed of two parts:
* SunOS software
* Graphical user environment and the ONC[TM] system with networking (NFS, NIS, and NIS+)
Version History
* SunOS software: The earlier versions of Sun's operating system were simply called SunOS.
* SunOS 4.1.1 software: With the advent of SunOS 4.1.1 software,
the name Solaris 1 was adopted to describe the operating system with
the additional graphics-networking environment.
(Refer to Appendix A for a SunOS 4.x/Solaris 1 equivalence list.)
* SunOS 4.x software: The SunOS 4.x software range is the Berkeley
(BSD) standard and is superseded by the SunOS 5.x software range that
conforms to the System 5 Release 4 (SVR4) standard. This group of
operating systems is also known as the Solaris 2.x software range. To
confuse the issue further, the web site for the SunSolve[SM] program
refers to the SunOS 4.x software range as just SunOS and refers to the
SunOS 5.x range as just Solaris. Note: No further reference will be
made to the SunOS 4.x software range in this document. This software is
supported on a best-efforts basis only because it has reached the end
of the support life.
* Solaris 2.x software: When the 2.x range of operating systems
changed from 32 bit to 64/32 bit, the number "2" that preceded the
version number was dropped. Therefore, there is no Solaris 2.7 OS, only
Solaris 7 OS.
Equivalence List for Solaris 2.x OS and SunOS 5.x Software
The following list includes only those operating systems that are still popular and in use by customers
Solaris 2.x OS version
Equivalent SunOS 5.x Software Version Type
2.5.1 5.5.1 32 bit
2.6 5.6 32 bit
7 5.7 64 bit/32 bit
8 5.8 64 bit/32 bit
9 5.9 64 bit/32 bit
The Solaris 2.x OS range and the SunOS 5.x software range are available
to run on both SPARC[R] technology and INTEL architecture.
Which Version of Solaris OS Do I Have Installed?
To identify the Solaris 2.x OS version that you have installed, you can the following command to display the /etc/release file:
cat /etc/release
The following output appears:
The /etc/release file may contain entries that show a "month/year" date following the version information:
Solaris 9 12/02 s9s_u2wos_10 SPARC
In the preceding example, the 12/02 indicates that this is a hardware
release of this version of the operating system, that is, Solaris 9
hardware release December 2002.
When there are no entries with a "month/year" date version, the release is one of the following:
FCS or Blank First Customer Shipment
Solaris 2.6
Solaris 8 FCS
Beta release
Solaris 8 Beta
MU Maintenance Update
Solaris 8 Maintenance Update 2 (MU2)
Which Version of SunOS Software Do I Have installed?
The command to identify the SunOS 5.x software version that you have installed installed is uname -r or uname -sr.
uname -sr
附录 A: Solaris OS 和 SunOS Software 的对应关系
Solaris 1.0 = SunOS 4.1.1
Solaris 1.0.1 = SunOS 4.1.2
Solaris 1.1 = SunOS 4.1.3
Solaris 1.1.1A = SunOS 4.1.3_U1 Version A
Solaris 1.1.1B = SunOS 4.1.3_U1 Version B
Solaris 1.1.2 = SunOS 4.1.4
The following SunOS 4.x software revisions were not referred to as the Solaris 1 OS.
SunOs 4.1.1B (FCS Feb. 1991)
SunOs 4.1.1.1 (FCS Jul. 1991)
SunOS 4.1.1_U1 (FCS Nov. 1991)
SunOS 4.1 PSR_A (FCS May 1990)
SunOS 4.1 (FCS Mar. 1990)
SunOS 4.0.3 PSR_A (FCS Jul. 1989)
SunOS 4.0.3c (FCS Jun. 1989)
SunOS 4.0.3 (FCS May 1989)
SunOS 4.0.2 (FCS Sept.1988)
SunOS 4.
附录 B: Solaris操作系统从2.5.1以来的所有发布版本
Solaris 2.5.1 4/97
Solaris 2.5.1 8/97
Solaris 2.5.1 11/97
Solaris 2.6
Solaris 2.6 3/98
Solaris 2.6 5/98
Solaris 2.6 Maintenance Update 2
Solaris 7 FCS
Solaris 7 3/99
Solaris 7 5/99
Solaris 7 8/99
Solaris 7 11/99
Solaris 8 Beta
Solaris 8 Beta Refresh
Solaris 8 FCS
Solaris 8 Update 1 (6/00)
Solaris 8 Maintenance Update 1 (MU1)
Solaris 8 Update 2 (10/00)
Solaris 8 Maintenance Update 2 (MU2)
Solaris 8 Update 3 (1/01)
Solaris 8 Update 4 (4/01) Beta
Solaris 8 Update 4 (4/01)
Solaris 8 Update 5 (7/01)
Solaris 8 Update 6 (10/01) Beta
Solaris 8 Update 6 (10/01)
Solaris 8 Update 7 (2/02)
Solaris 8 HW 12/02 (PSR1 Product Specific Release)
Solaris 8 HW 5/03 (PSR2 Product Specific Release)
Solaris 8 HW 7/03 (PSR3 Product Specific Release)
Solaris 8 2/04
Solaris 9 Beta
Solaris 9 Beta Refresh
Solaris 9 FCS
Solaris 9 Update 1 (9/02)
Solaris 9 Update 2 (12/02)
Solaris 9 Update 3 (4/03)
Solaris 9 Update 4 (8/03)
Solaris 9 Update 5 (12/03)
Solaris 9 Update 6 (4/04)
以下为本人知道的Solaris 10的各个发布版（2005年的暂缺，希望各网友知道的请在评论中指出，谢谢）
Solaris 10 01/06
Solaris 10 06/06
Solaris 10 11/06
免费在线阅读电子版： SUN Solaris 9/10 认证系统管理员学习指南（全球唯一中文版教材）
