what OS version is this

when I type uname -a I get this

SunOS hostname 5.7 Generic_106541-23 sun4u sparc SUNW,Ultra-4

that means I have solaris # ?
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ryangclearAsked:
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jlevieConnect With a Mentor Commented:
Yes you have Solaris 7, aka 5.7.
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ryangclearAuthor Commented:
solaris 8 , 9 , and 10 are also known as
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jlevieCommented:
5.8, 5.9, etc.
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ryangclearAuthor Commented:
why would they do it like that :S
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jlevieCommented:
It is partly historical in nature. The orginal operating system for Sun systems (SunOS) was based on BSD and had version numbers like 2.1, 3.2, 4.10, 4.11, etc. The major (e.g., 4) and minor (e.g., 11) numbers were significant for applications that one might want to use. When Sun introduced the SysV based operating system as a successor to SunOS they also wanted to simplify the versioning designation for marketing purposes. However, simply having 'uname -r' return a single digit would break lots of things that looked for n.n as a version. They also wanted the version to reflect, in an unambigious manner, that a copy of the OS was running SunOS or Solaris. So all versions of Solaris to date are 5.x, with the minor number indicating the release and 5 indicating Solaris.
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ryangclearAuthor Commented:
thanks!
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