[Gllug] Bizarre shell behaviour

[Dylan]

On Friday 07 November 2003 23:57 pm, Bruce Richardson wrote:
> On Fri, Nov 07, 2003 at 11:27:51PM +0000, Dylan wrote:
> > On Friday 07 November 2003 17:16 pm, Tethys wrote:
> > > Take the following shell script. Run it:
> > >
> > > 	#!/bin/sh
> > >
> > > 	count=0
> > > 	while read var
> > > 	do
> > > 		count=1
> > > 	done < /etc/group
> > >
> > > 	echo $count
> >
> > Just out of interest (and 'cos I'm trying to learn shell scripting) can
> > someone explain what this is supposed to achieve. The loop is obvious,
> > but what's the redirection all about?
>
> It's reading from the file /etc/group, one line at a time.

Thanks. I added an echo $var before the done and got a listing of the file so 
I figure each line is going into $var. How does this work then?

Dylan

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