2005-05-02 15:01:42 +02:00
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.TH COMM 1
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.SH NAME
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comm \- print lines common to two sorted files
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.SH SYNOPSIS
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\fBcomm\fR [\fB\-123\fR] \fIfile1 file2\fR
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.br
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.de FL
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.TP
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\\fB\\$1\\fR
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\\$2
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..
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.de EX
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.TP 20
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\\fB\\$1\\fR
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# \\$2
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..
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.SH OPTIONS
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2012-03-31 23:44:29 +02:00
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.TP 5
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.B \-1
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# Suppress column 1 (lines present only in \fIfile1\fP)
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.TP 5
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.B \-2
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# Suppress column 2 (lines present only in \fIfile2\fP)
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.TP 5
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.B \-3
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# Suppress column 3 (lines present in both files)
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2005-05-02 15:01:42 +02:00
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.SH EXAMPLES
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2012-03-31 23:44:29 +02:00
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.TP 20
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.B comm file1 file2
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# Print all three columns
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.TP 20
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.B comm \-12 file1 file2
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# Print only lines common to both files
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2005-05-02 15:01:42 +02:00
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.SH DESCRIPTION
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.PP
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Two sorted files are read and compared.
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A three column listing is produced.
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Files only in
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.I file1
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are in column 1;
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files only in
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.I file2
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are in column 2;
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files common to both files are in column 3.
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The file name \- means \fIstdin\fR.
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.SH "SEE ALSO"
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.BR cmp (1),
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.BR diff (1),
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.BR sort (1).
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