Date: Thu, 06 Jan 2005 21:00:44 -0700 From: Tom Vilot <tom@vilot.com> To: Eric F Crist <ecrist@secure-computing.net> Cc: FreeBSD-Questions Questions <freebsd-questions@freebsd.org> Subject: Re: my lame attempt at a shell script... Message-ID: <41DE096C.3060903@vilot.com> In-Reply-To: <1F964093-6051-11D9-90DC-000D9333E43C@secure-computing.net> References: <06DDB71C-5DB4-11D9-B56F-000D9333E43C@secure-computing.net> <8B357427-5DB7-11D9-89A5-000D93AD26C8@tntluoma.com> <Pine.NEB.4.61.9.0501041028340.407@kenmore.kozy-kabin.nl> <7B531D49-6041-11D9-8A15-000D9333E43C@secure-computing.net> <41DDE5C5.2050402@vilot.com> <1F964093-6051-11D9-90DC-000D9333E43C@secure-computing.net>
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Eric F Crist wrote:
> What is the point of the { } around some variables?
It's not strictly necessary, except in some cases. i.e:
m=34
echo $m
You don't need it there.
But you would want it here:
f=/var/filename
fname=${f//name/name2}
It's when you need to differentiate the variable name from operations
around it ... for want of a better explanation ....
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