POSIX is a "standard" form of Unix. On OpenVMS, if you type POSIX you will be transferred into the POSIX subsystem, which looks pretty much like any other Unix you are used to. Or at least, it is no more different from other Unixes than they are from each other.
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Primarily you either use POSIX because you grew up using Unix and can't function outside of that environment (give me vi or give me death!), or because you need to use some tool that is in there that doesn't have a close OpenVMS equivalent (awk, for instance).
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Author: David
Mathog
Credits: Rich Lafferty
Maintained by:
helpline@alcor.concordia.ca
Last update: $Date: 1999/05/18 16:16:23 $ -- Rich Lafferty