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Annotation of src/usr.bin/cmp/cmp.1, Revision 1.2

1.2     ! deraadt     1: .\"     $OpenBSD: cmp.1,v 1.4 1995/09/08 03:22:55 tls Exp $
1.1       deraadt     2: .\"     $NetBSD: cmp.1,v 1.4 1995/09/08 03:22:55 tls Exp $
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                      4: .\" Copyright (c) 1987, 1990, 1993
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                     38: .\"     @(#)cmp.1      8.1 (Berkeley) 6/6/93
                     39: .\"
                     40: .Dd June 6, 1993
                     41: .Dt CMP 1
                     42: .Os
                     43: .Sh NAME
                     44: .Nm cmp
                     45: .Nd compare two files
                     46: .Sh SYNOPSIS
                     47: .Nm cmp
                     48: .Op Fl l | Fl s
                     49: .Ar file1 file2
                     50: .Op Ar skip1 Op Ar skip2
                     51: .Sh DESCRIPTION
                     52: The cmp utility compares two files of any type and writes the results
                     53: to the standard output.
                     54: By default,
                     55: .Nm
                     56: is silent if the files are the same; if they differ, the byte
                     57: and line number at which the first difference occurred is reported.
                     58: .Pp
                     59: Bytes and lines are numbered beginning with one.
                     60: .Pp
                     61: The following options are available:
                     62: .Bl -tag -width flag
                     63: .It Fl l
                     64: Print the byte number (decimal) and the differing
                     65: byte values (octal) for each difference.
                     66: .It Fl s
                     67: Print nothing for differing files; return exit
                     68: status only.
                     69: .El
                     70: .Pp
                     71: The optional arguments
                     72: .Ar skip1
                     73: and
                     74: .Ar skip2
                     75: are the byte offsets from the beginning of
                     76: .Ar file1
                     77: and
                     78: .Ar file2 ,
                     79: respectively, where the comparison will begin.
                     80: The offset is decimal by default, but may be expressed as an hexadecimal
                     81: or octal value by preceding it with a leading ``0x'' or ``0''.
                     82: .Pp
                     83: The
                     84: .Nm cmp
                     85: utility exits with one of the following values:
                     86: .Bl -tag -width 4n
                     87: .It 0
                     88: The files are identical.
                     89: .It 1
                     90: The files are different; this includes the case
                     91: where one file is identical to the first part of
                     92: the other.
                     93: In the latter case, if the
                     94: .Fl s
                     95: option has not been specified,
                     96: .Nm cmp
                     97: writes to standard output that EOF was reached in the shorter
                     98: file (before any differences were found).
                     99: .It >1
                    100: An error occurred.
                    101: .El
                    102: .Sh SEE ALSO
                    103: .Xr diff 1 ,
                    104: .Xr diff3 1
                    105: .Sh STANDARDS
                    106: The
                    107: .Nm cmp
                    108: utility is expected to be
                    109: .St -p1003.2
                    110: compatible.