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Re: Does sort -2,3n work properly?
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From: |
Eric Blake |
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Subject: |
Re: Does sort -2,3n work properly? |
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Date: |
Sat, 18 Jan 2014 09:46:38 -0700 |
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Mozilla/5.0 (X11; Linux x86_64; rv:24.0) Gecko/20100101 Thunderbird/24.2.0 |
On 01/18/2014 09:29 AM, Bartosz Gołaszewski wrote:
> 2014/1/17 Pádraig Brady <address@hidden>:
>> So these are warning messages indicating a usage issue.
>> The specific one here is you've _spanned_ multiple fields
>> but numeric compares auto terminate at the first numbers.
>
> Thanks, that explains it!
>
>> You probably want to compare multiple fields in sequence. I.E.
>>
>> sort -k2,2n -k3,3n
>>
>> thanks,
>> Pádraig.
>
> I was actually checking some busybox compatibility issues.
In fact, it's possible to contrive corner cases where numeric sorting
DOES span fields:
$ printf '10210304\n20120403\n30102305\n' | sort -t0 -k2,3n --debug
sort: using ‘en_US.UTF-8’ sorting rules
sort: key 1 is numeric and spans multiple fields
30102305
____
________
20120403
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10210304
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--
Eric Blake eblake redhat com +1-919-301-3266
Libvirt virtualization library http://libvirt.org
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