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bug#9455: RFE: split --balanced
From: |
Dave Yost |
Subject: |
bug#9455: RFE: split --balanced |
Date: |
Wed, 7 Sep 2011 05:31:26 -0700 |
Much better design. Thanks.
/ from my iPhone 4 /
On Sep 7, 2011, at 12:59 AM, Pádraig Brady <address@hidden> wrote:
> 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.