Related to the UNIX-based Operating System produced by Sun Microsystems since the 1980's and acquired by Oracle in 2010.

Both the terms "SunOS" and "Solaris" are frequently interchanged in today's vernacular. However, historically, "SunOS" used to refer to the UNIX-based OS prior to version 2.6.

The term "SunOS" is also seen as the "Operating System Type" when queried by various compilers & built-in commands (such as uname)

The operating system supports both "SPARC" & "x86"-based CPU architecture.

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