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bug#9455: RFE: split --balanced
From: |
Pádraig Brady |
Subject: |
bug#9455: RFE: split --balanced |
Date: |
Wed, 07 Sep 2011 08:59:16 +0100 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:5.0) Gecko/20110707 Thunderbird/5.0 |
On 09/07/2011 01:55 AM, Dave Yost wrote:
> Z% for x in 1 2 3 4 5 6 7
> for> do echo $x ; done | split --lines=3 \
> pipe> && for x in x?? ; do echo "=== $x" ; cat $x ; done
> === xaa
> 1
> 2
> 3
> === xab
> 4
> 5
> 6
> === xac
> 7
>
> In some applications, you would like split to more evenly apportion the
> output to the files, like this:
>
> Z% for x in 1 2 3 4 5 6 7
> for> do echo $x ; done | split --balanced --lines=3 \
> pipe> && for x in x?? ; do echo "=== $x" ; cat $x ; done
> === xaa
> 1
> 2
> 3
> === xab
> 4
> 5
> === xac
> 6
> 7
>
So you'd like to distribute evenly across the last 2 buckets.
It seems like it would be more general to specify the number of buckets
instead and let split balance across them all, which is supported recently.
$ seq 7 | split -nr/3; tail x??
==> xaa <==
1
4
7
==> xab <==
2
5
==> xac <==
3
6
$ seq 7 > 7; split -nl/3 7; tail x??
==> xaa <==
1
2
==> xab <==
3
4
==> xac <==
5
6
7
Would that suffice?
cheers,
Pádraig.