Path: utzoo!utgpu!news-server.csri.toronto.edu!rutgers!cs.utexas.edu!sun-barr!lll-winken!uunet!auspex!guy
From: guy@auspex.auspex.com (Guy Harris)
Newsgroups: comp.unix.questions
Subject: Re: mv'ing files from a C program
Message-ID: <4437@auspex.auspex.com>
Date: 18 Nov 90 03:16:56 GMT
References: <1990Nov15.132952.11932@virtech.uucp> <1990Nov15.183359.963@ssd.kodak.com> <1990Nov15.192748.3952@thyme.jpl.nasa.gov>
Distribution: na
Organization: Auspex Systems, Santa Clara
Lines: 12

>Both seem kind of expensive.  What's wrong with rename....  (man 2
>rename).

It's not present in all systems. 

It's present in (4.2andup)BSD-based systems, including System V Release
4.  (1/2 :-) - there are plenty of things from BSD in there....) It's
also specified by POSIX, so any POSIX-compliant system will have it.

It's not in vanilla S5R3 from AT&T (unless it snuck into S5R3.2 - some
vendors S5R3-based systems may have added it, but others may not have),
nor in any earlier AT&T releases.