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bug#19533: comm does not detect common lines -- Mac OS X 10.9.5
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From: |
Eric Blake |
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Subject: |
bug#19533: comm does not detect common lines -- Mac OS X 10.9.5 |
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Date: |
Wed, 07 Jan 2015 15:12:26 -0700 |
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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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