Jeff Elkins <[EMAIL PROTECTED]> writes:
> ARCH := $(shell uname -m | sed -e s/i.86/i386/ -e s/sun4u/sparc64/ -e
> s/arm.*/arm/ -e s/sa110/arm/
>
> I'm working on polishing my meagre shell scripting skills and would
> appreciate some feedback on the line above, quoted from the kernel Makefile.
>
> 1. How would you use this in a straight bash script so it returned a value
> containing the boxes architecture?
The contents of the $(shell ...) Make fragment should be a valid shell
command.
> 2. As far as comparisons go, if I wanted to determine if a string contained
> ".xyz" or ".abc" would that be a variant of the fragment above?
Two somewhat common ways:
uname -m | grep i.86 > /dev/null && echo x86
case `uname -m` in
i?86) echo x86 ;;
esac
--
David Maze [EMAIL PROTECTED] http://people.debian.org/~dmaze/
"Theoretical politics is interesting. Politicking should be illegal."
-- Abra Mitchell
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