Date: Tue, 11 Jan 2000 14:39:49 +0100 (CET) From: Oliver Fromme <olli@dorifer.heim3.tu-clausthal.de> To: freebsd-questions@FreeBSD.ORG, dl@tyfon.net Subject: Re: mathematics in sh Message-ID: <200001111339.OAA30067@dorifer.heim3.tu-clausthal.de> In-Reply-To: <85eqqp$1sfn$1@atlantis.rz.tu-clausthal.de>
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Dan Larsson <dl@tyfon.net> wrote in list.freebsd-questions:
> Is it possible to do mathematical ( simple calculations such as ($a + $b)/$c ) calculations in sh?
I usually use ``expr'' for integer calculations, and ``dc'' for
floating point stuff. I try to avoid the shell's arithmetic
expansion, because it's not portable to all sh implementations.
For more complicated stuff, I use awk. Or C, if appropriate.
See ``man expr'', ``man dc'' and (if you don't like the RPN of
dc) ``man bc''.
> Or is perl better to use in this case?
I think perl is never better to use. :-)
Regards
Oliver
--
Oliver Fromme, Leibnizstr. 18/61, 38678 Clausthal, Germany
(Info: finger userinfo:olli@dorifer.heim3.tu-clausthal.de)
"In jedem Stück Kohle wartet ein Diamant auf seine Geburt"
(Terry Pratchett)
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