In a message dated: Mon, 19 Jun 2000 12:03:56 EDT
Benjamin Scott said:
>On Mon, 19 Jun 2000, Paul Lussier wrote:
>>> (Of course, bash's extensions, which I make liberal use of, aren't exactly
>>> "portable", either.)
>>
>> That's ksh is for :)
>
> Two questions:
>
> Is ksh required by POSIX?
I have no idea. But when did conformance to a standard ever matter ;)
> Is ksh generally implemented by all the various Unixes out there (both
>commercial and free)? (POSIX conformance varies.)
Yes. You can get ksh for the older BSD variants of SunOS et al. I believe
Ultrix shipped with it, HP-UX has always had it, as well as AIX (AIX actually
had root's shell set to /bin/ksh!). All the newer commercial versions ship
with ksh, and all the free Unix versions have pdksh, which is shipped with all
the Linux distro's I know of (though not necessarilly installed by default,
which makes no sense to me, since RH does install ash by default. Yeah, huge
user base there! ;)
>> Of course all shell scripting should be done in either pure /bin/sh ...
>
> You just used "pure" and a Unix feature in the same sentence. Isn't that an
>oxymoron? :-)
Well, okay, since the original /bin/sh wasn't Bourne Shell, I guess you're
right :)
>> ... or perl ...
>
> I wouldn't call Perl a "shell scripting language". It's a tremendously
>useful tool, but not something that should be used for critical system
>functions. In particular, I really hate people who put Perl scripts in
>/etc/init.d (or local equivalent). Why do people thing /usr will always be
>there?
Well, you can install perl anywhere you want. I agree with you that init
scripts should not be written in perl (unless the system has perl installed in
/bin, /lib, etc.) which is why I mentioned "pure" /bin/sh compatibility (as
opposed to bash)
> While I'm ranting (who me?), I really hate APC's PowerChute for Linux
>software, which requires libstdc++ to send shutdown calls to the UPS. That
>don't work too well when it is called at the end of rc.halt and /usr is
>already unmounted. :-(
Wow! There's a brilliant design decision. Don't tell RH about it or they'll
require a GNOME install dependancy too :)
--
Seeya,
Paul
----
"I always explain our company via interpretive dance.
I meet lots of interesting people that way."
Niall Kavanagh, 10 April, 2000
If you're not having fun, you're not doing it right!
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