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From: Rainer Weikusat on 24 May 2010 13:49
Mateusz_madi <madi.czadi(a)gmail.com> writes:
> I wan't to show all lines from file which consist of only 3 char:
> grep ^.{3}$ file
> Why this does't work?? Isn't it the same as :
> grep ^...$ file ??

The working variant and grep '^...$' are indeed identical.
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