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Annotation of 43BSDReno/usr.bin/comm/comm.1, revision 1.1.1.1

1.1       root        1: .\" Copyright (c) 1989, 1990 The Regents of the University of California.
                      2: .\" All rights reserved.
                      3: .\"
                      4: .\" Redistribution and use in source and binary forms are permitted provided
                      5: .\" that: (1) source distributions retain this entire copyright notice and
                      6: .\" comment, and (2) distributions including binaries display the following
                      7: .\" acknowledgement:  ``This product includes software developed by the
                      8: .\" University of California, Berkeley and its contributors'' in the
                      9: .\" documentation or other materials provided with the distribution and in
                     10: .\" all advertising materials mentioning features or use of this software.
                     11: .\" Neither the name of the University nor the names of its contributors may
                     12: .\" be used to endorse or promote products derived from this software without
                     13: .\" specific prior written permission.
                     14: .\" THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
                     15: .\" WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
                     16: .\" MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
                     17: .\"
                     18: .\"     @(#)comm.1     6.4 (Berkeley) 7/24/90
                     19: .\"
                     20: .Dd July 24, 1990
                     21: .Os BSD 4.4
                     22: .Dt COMM 1
                     23: .Sh NAME
                     24: .Nm comm
                     25: .Nd Select or reject lines common to two files
                     26: .Sh SYNOPSIS
                     27: .Nm comm
                     28: .Op Fl 123
                     29: .Ar file1 file2
                     30: .Sh DESCRIPTION
                     31: The
                     32: .Nm comm
                     33: utility reads
                     34: .Ar file1
                     35: and
                     36: .Ar file2 ,
                     37: which should be
                     38: sorted lexically, and produces three text
                     39: columns as output: lines only in
                     40: .Ar file1 ;
                     41: lines only in
                     42: .Ar file2 ;
                     43: and lines in both files.
                     44: .Pp
                     45: The filename
                     46: .Sq Fl
                     47: means the standard input.
                     48: .Pp
                     49: The following options are available:
                     50: .Tw Ds
                     51: .Tp Fl 1
                     52: Suppress printing of column 1.
                     53: .Tp Fl 2
                     54: Suppress printing of column 2.
                     55: .Tp Fl 3
                     56: Suppress printing of column 3.
                     57: .Tp
                     58: .Pp
                     59: Each column will have a number of tab characters prepended to it
                     60: equal to the number of lower numbered columns that are being printed.
                     61: For example, if column number two is being suppressed, lines printed
                     62: in column number one will not have any tabs preceding them, and lines
                     63: printed in column number three will have one.
                     64: .Pp
                     65: .Nm Comm
                     66: assumes that the files are lexically sorted; all characters
                     67: participate in line comparisons.
                     68: .Pp
                     69: .Nm Comm
                     70: exits 0 on success, >0 if an error occurred.
                     71: .Sh SEE ALSO
                     72: .Xr cmp 1 ,
                     73: .Xr diff 1 ,
                     74: .Xr sort 1 ,
                     75: .Xr uniq 1
                     76: .Sh STANDARDS
                     77: The
                     78: .Nm comm
                     79: function is expected to be POSIX 1003.2 compatible.

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