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bug#48171: Possible Bug in comm 8.32
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From: |
Pádraig Brady |
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Subject: |
bug#48171: Possible Bug in comm 8.32 |
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Date: |
Sun, 2 May 2021 22:14:09 +0100 |
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User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:84.0) Gecko/20100101 Thunderbird/84.0 |
tag 48171 notabug
close 48171
stop
On 02/05/2021 19:54, Jon Forrest wrote:
This is on Fedora 34 server.
$ uname -a
Linux fedora 5.11.16-300.fc34.x86_64 #1 SMP Wed Apr 21 13:18:33 UTC 2021
x86_64 x86_64 x86_64 GNU/Linux
$ comm --version
comm (GNU coreutils) 8.32
Consider the 2 attached files f1.txt and f2.txt. They're already sorted.
$ comm -12 f1.txt f2.txt
1O55
1O56
This means that 1055 and 1056 are in both files. However, this isn't
true.
$ fgrep 1055 f1.txt f2.txt
f1.txt:1055
$ fgrep 1056 f1.txt f2.txt
f1.txt:1056
Note that these lines are only in f1.txt. This looks like
a bug.
Please advise.
Your input data looks incorrect.
There is a mixup between the letter O and digit 0.
The following should be instructive:
$ grep 1O5[56] f[12].txt
f1.txt:1O55
f1.txt:1O56
f2.txt:1O55
f2.txt:1O56
cheers,
Pádraig