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System V or POSIX

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# 1  
Old 05-10-2010
System V or POSIX
Hi ,

I am using UNIX network programming Vol1 (by R Stevens) book to learn about IPC.

I would be using HP-UX,Solaris and Linux at my work.

I have sections for POSIX and for System V in that book.

I am quite confused in indentifying those OSs as POSIX or SYstem V.

Can anyone please help me which standard are those OSs belong to.


THanks

Kumaran
# 2  
Old 05-10-2010
Please provide more details about what part of these standards you are talking about.

Solaris and HP-UX are both based on System V source code and POSIX compliants. Gnu/Linux isn't based on System V but tend to be closer to its semantics than it used to be, depending on the distributions too. Gnu/Linux is also probably close to unofficially comply with many POSIX standards.
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