On Wednesday 19 February 2003 16:53, kevin lyda wrote:
> On Wed, Feb 19, 2003 at 04:09:01PM -0500, Jesse Guardiani wrote:
> > On Wednesday 19 February 2003 15:55, Jason R. Mastaler wrote:
> > > setenv() is not a standard UNIX function. Use putenv() instead.
> >
> > Jason, I'm a C programmer coming from a windows world, basically.
>
> we all have our crosses to bear i suppose...
>
> > I've been amazed at all the compatibility issues among the various
> > unices.
>
> actually considering that unix is 30+ years old and the wide variety of
> roles its implementations have been asked to fill, i'm usually stunned
> at how compatible they are.
>
> > Is there a book or collection of articles somewhere that detail what
> > functions are "Standard" unix? (In windows, you just design for 98 or 95
> > and it's likely to work).
> >
> > And by "Standard", do you mean POSIX?
>
> yes, that's best. on a linux system you can do a man on nearly all
> system and libc function calls. at the bottom of the man page there is
> usually a section called "CONFORMING TO". you want to look for POSIX in
> that list. the more standards that it conforms to beyond that the better.
> "the great thing about standards..."
>
> one other thing to note, man pages are divided into sections based on the
> original published manuals. if you'd like to learn about each section
> do this:
>
> man 1 intro
> man 2 intro (here there live system calls like fork, write, etc)
> man 3 intro (library calls are here - libc is a library)
> man 4 intro
> [...]
> man 8 intro
>
> as a final note, in my opinion the best man pages exist on bsd systems.
> in this regard i've mostly used openbsd, but i'd guess that freebsd is
> well documented as well. since linux and {free,net,open}bsd are freely
> available, i highly suggest installing a linux and a bsd in order to
> try your code out on two platforms. portable (not just theoretically
> portable) code tends to be better code as different platforms highlight
> different bugs. while i like the ethics of free software, in some ways
> i attribute the gnu utils higher scores on fuzz tests to the fact that
> they've been ported across a wide range of systems.
I run a FreeBSD shop. Thanks for the info!
>
> so if you're using linux for development, it would be a good idea
> to install a bsd for the docs and for proving your code is portable.
> though building on different c compilers is a good additional test.
>
> kevin
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