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bug#24929: comm enhancement proposal: --print-summary --quiet
From: |
Bernhard Voelker |
Subject: |
bug#24929: comm enhancement proposal: --print-summary --quiet |
Date: |
Thu, 17 Nov 2016 11:18:21 +0100 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:45.0) Gecko/20100101 Thunderbird/45.4.0 |
On 11/17/2016 11:12 AM, Pádraig Brady wrote:
> Usually you'd want counts separately from each other
> and separate from the data itself, in which case wc -l suffices:
>
> $ echo Lines in both = $(comm -12 file1 file2 | wc -l)
> $ echo Lines only in 1st = $(comm -23 file1 file2 | wc -l)
> $ echo Lines only in 2nd = $(comm -13 file1 file2 | wc -l)
>
> So this is in the efficiency/convenience category.
You mean to change the --total flag to accept an argument?
$ echo Lines in both = $( comm -123 --total=3 file1 file2)
$ echo Lines only in 1st = $(comm -123 --total=1 file1 file2)
$ echo Lines only in 2nd = $(comm -123 --total=2 file1 file2)
and
$ echo Lines only in 1st or 2nd = $(comm -123 --total=1,2 file1 file2)
?
Have a nice day,
Berny
bug#24929: comm enhancement proposal: --print-summary --quiet, 積丹尼 Dan Jacobson, 2016/11/18