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24 lines
548 B
Markdown
24 lines
548 B
Markdown
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# comm
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> Select or reject lines common to two files. Both files must be sorted.
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- Produce three tab-separated columns: lines only in first file, lines only in second file and common lines.
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`comm {{file1}} {{file2}}`
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- Print only lines common to both files.
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`comm -12 {{file1}} {{file2}}`
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- Print only lines common to both files, read one file from stdin.
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`cat {{file1}} | comm -12 - {{file2}}`
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- Print lines only found in first file.
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`comm -23 {{file1}} {{file2}}`
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- Print lines only found in second file.
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`comm -13 {{file1}} {{file2}}`
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