[debbugs-tracker] bug#19533: closed (comm does not detect common lines -- Mac OS X 10.9.5)

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Your message dated Wed, 07 Jan 2015 15:12:26 -0700
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and subject line Re: bug#19533: comm does not detect common lines -- Mac OS X 
10.9.5
has caused the debbugs.gnu.org bug report #19533,
regarding comm does not detect common lines -- Mac OS X 10.9.5
to be marked as done.

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19533: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=19533
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--- Begin Message --- Subject: comm does not detect common lines -- Mac OS X 10.9.5 Date: Wed, 7 Jan 2015 16:23:25 -0500

Hello,

Thanks for this amazing tool.

I tried comm on test1.txt and test2.txt. The output I got is in comm-test.txt. Comm found 11 common lines and missed 6 other lines.

Could you please explain why this is happening?

Thank you in advance.

Best,

Ali

comm-test
Description: Binary data

test2
Description: Binary data

test1
Description: Binary data

--- End Message ---

--- Begin Message --- Subject: Re: bug#19533: comm does not detect common lines -- Mac OS X 10.9.5 Date: Wed, 07 Jan 2015 15:12:26 -0700 User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:31.0) Gecko/20100101 Thunderbird/31.3.0

tag 19533 notabug
thanks

On 01/07/2015 02:23 PM, Ali Khanafer wrote:
> Hello,
> 
> Thanks for this amazing tool.
> 
> I tried comm on test1.txt and test2.txt. The output I got is in
> comm-test.txt. Comm found 11 common lines and missed 6 other lines.
> 
> Could you please explain why this is happening?

Using a newer version of coreutils would tell you why:

$ comm test1 test2
                1266281
                11348282
                15431856
16264803
                17248121
                17384099
18911432
        20513956
                21436960
                21634600
                24129206
                33773592
                37710752
                44903491
comm: file 1 is not in sorted order
103652294
103865085
126302054
198494684
208442526
253536357
1002513128

        46959037
        51274038
comm: file 2 is not in sorted order
        103652294
        103865085
        126302054
        208442526
        253536357
        1002513128

Proper use of comm requires that you pre-sort both input files.  As
such, this is not a bug in comm, so I'm closing this bug.  However, feel
free to add further comments or questions.

-- 
Eric Blake   eblake redhat com    +1-919-301-3266
Libvirt virtualization library http://libvirt.org

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