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> Select or reject lines common to two files. Both files must be sorted.
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})
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> This work is licensed under the Creative Commons Attribution 4.0 International License (CC-BY).
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