comm

Options

-1

comm-help-column-1

-2

comm-help-column-2

-3

comm-help-column-3

--output-delimiter=<STR>

comm-help-delimiter

--zero-terminated, -z

comm-help-zero-terminated

--total

comm-help-total

--check-order

comm-help-check-order

--nocheck-order

comm-help-no-check-order

Examples

Produce three tab-separated columns: lines only in first file, lines only in second file and common lines:

comm {{file1}} {{file2}}

Print only lines common to both files:

comm -12 {{file1}} {{file2}}

Print only lines common to both files, reading one file from stdin:

cat {{file1}} | comm -12 - {{file2}}

Get lines only found in first file, saving the result to a third file:

comm -23 {{file1}} {{file2}} > {{file1_only}}

Print lines only found in second file, when the files aren't sorted:

comm -13 <(sort {{file1}}) <(sort {{file2}})

The examples are provided by the tldr-pages project under the CC BY 4.0 License.

Please note that, as uutils is a work in progress, some examples might fail.