From: Nate Eldredge <neldredge AT hmc DOT edu>
Newsgroups: comp.os.msdos.djgpp
Subject: Re: files
Date: 27 Mar 2000 13:45:22 -0800
Organization: InterWorld Communications
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References: <jcsD4.4971$jX3 DOT 69233 AT typhoon DOT nyroc DOT rr DOT com> <200003270928 DOT LAA16362 AT maggiore DOT iperbole DOT bologna DOT it>
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pad2369 <pad2369 AT iperbole DOT bologna DOT it> writes:

> Quota John <fubu36 AT stny DOT rr DOT com>:
> 
> > I am trying to make a database. The only way I could 
> come up with to update
> > a file was to write a new one from the current one 
> inserting then new stuff
> > at the right place. Aftrer this is done how would I 
> delete the old file and
> > rename the new one to the correct name? thanks
> 
> You can use unlink() to remove files and rename() / 
> _rename() to rename files.
> 
> Talking about portability, I am sure unlink() is posix, 
> while I am not sure about rename()...

rename() is in the Single Unix Spec, which mentions that it comes from
POSIX.1.  So yes.

_rename is not portable at all; this is true of almost anything
beginning with an underscore.  (_exit is an exception; it's in the SUS
and supposedly was in SVID (System V Interface Definition)).

-- 

Nate Eldredge
neldredge AT hmc DOT edu