[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
bug#20725: Shuf problem
From: |
Stephane Chazelas |
Subject: |
bug#20725: Shuf problem |
Date: |
Wed, 3 Jun 2015 14:58:58 +0100 |
User-agent: |
Mutt/1.5.21 (2010-09-15) |
2015-06-03 14:33:35 +0100, Pádraig Brady:
> On 03/06/15 14:20, Federico Alves wrote:
> > I think that shuf should have an option, may set ON by default, to avoid
> > empty lines in a file when shuffling it. if a file has 100 lines and ten
> > are simply returns, 99% of the time I do not want an empty line, I want
> > only the real lines.
>
> We would only consider that if it provided functional benefits
> or large performance gains. Neither would be the case here I think
> compared to some simple preprocessing like:
>
> sed '/^$/d' | shuf
[...]
Or
grep -v '^$' | shuf
or
grep . | shuf
(that one will also exclude lines that contain sequences of
bytes that don't form any valid characters).
--
Stephane