GNU bug report logs - #33574
grep -c question

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Message #5 received at submit <at> debbugs.gnu.org (full text, mbox):

From: "Helen Grubner" <helen.grubner <at> fgznet.ch>
To: <bug-grep <at> gnu.org>
Cc: 'Alexander Grubner' <alexander.grubner <at> fgznet.ch>
Subject: grep -c question
Date: Sun, 2 Dec 2018 08:07:53 +0100

[Message part 1 (text/plain, inline)]

Dear Team

 

Can you tell me, why I see this with grep -c on a file with following
content?

 

$ cat file_13.txt

1

2

3

4

5

6

7

8

9

10

11

12

13

 

$ grep -c 1 file_13.txt

5

 

Should it not show 6? When search for value 2, it is correct.

 

$ grep -c 3 file_13.txt

2

 

 

$ file file_13.txt

file_13.txt: ASCII text

 

Thank you

Alexander Grubner

 

[Message part 2 (text/html, inline)]

Message #8 received at 33574 <at> debbugs.gnu.org (full text, mbox):

From: Phillip Feldman <phillip.m.feldman <at> gmail.com>
To: helen.grubner <at> fgznet.ch
Cc: 33574 <at> debbugs.gnu.org, alexander.grubner <at> fgznet.ch
Subject: Re: bug#33574: grep -c question
Date: Sun, 2 Dec 2018 00:03:11 -0800

[Message part 1 (text/plain, inline)]

`grep -c` reports the number of matching lines--not the total number of
times the pattern appears.

On Sat, Dec 1, 2018 at 11:15 PM Helen Grubner <helen.grubner <at> fgznet.ch>
wrote:

> Dear Team
>
>
>
> Can you tell me, why I see this with grep -c on a file with following
> content?
>
>
>
> $ cat file_13.txt
>
> 1
>
> 2
>
> 3
>
> 4
>
> 5
>
> 6
>
> 7
>
> 8
>
> 9
>
> 10
>
> 11
>
> 12
>
> 13
>
>
>
> $ grep -c 1 file_13.txt
>
> 5
>
>
>
> Should it not show 6? When search for value 2, it is correct.
>
>
>
> $ grep -c 3 file_13.txt
>
> 2
>
>
>
>
>
> $ file file_13.txt
>
> file_13.txt: ASCII text
>
>
>
> Thank you
>
> Alexander Grubner
>
>
>
>

[Message part 2 (text/html, inline)]

Message #11 received at submit <at> debbugs.gnu.org (full text, mbox):

From: Paul Jackson <pj <at> usa.net>
To: bug-grep <at> gnu.org
Subject: Re: bug#33574: grep -c question
Date: Sun, 02 Dec 2018 08:55:49 -0600

>> `grep -c` reports the number of matching lines--not the total number of
>> times the pattern appears.

Yes. 

In other words, the line "11" counts as 1 match (one line), not as two matches.

I  would expect the command "grep -c somepattern somefile" to provide the
same results as the command "grep somepattern somefile | wc -l" (each matching
line counts once.)

-- 
                Paul Jackson
                pj <at> usa.net

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