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Annotation of src/usr.bin/cmp/cmp.1, Revision 1.1.1.1

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