On Tue, Oct 02, 2007 at 01:57:44PM -0700, ss11223 wrote:
> On Oct 2, 3:40 pm, Andrew Sackville-West <[EMAIL PROTECTED]>
> wrote:
> > Hey folks, help me out with this...please
> >
> > [EMAIL PROTECTED]:~$ for i in {1..3}; do echo $i; done
> > 1
> > 2
> > 3
> > [EMAIL PROTECTED]:~$ TEST=3; for i in {1..$TEST}; do echo $i; done
> > {1..3}
> >
> > in the first example, its obvious. In the second, $TEST gets replaced
> > with 3, but then the {} doesn't get expanded. I'm sure I have to do
> > some kind of wacky $({[ type thing, but I'm not able to grok it. any
> > ideas?
> >
> > the purpose is to be able to easily update some loops in a script for
> > different numbers of object to iterate over. obvious, I guess.
> >
> > A
> >
> > signature.asc
> > 1KDownload
>
> This works for me, BASH can do arithmetic!
>
> TEST=3; for (( i=1; i<=$TEST; i++)); do echo $i; done
okay, that's much better than Mike Bird's
for i in $(eval echo {1..$TEST})
in that it's much clearer, to my eye, what's happening.
thanks
A
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