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CIDR(1)			    General Commands Manual		       CIDR(1)

NAME
       cidr - RFC 1878 subnet helper

SYNOPSIS
       cidr [-v]

       cidr <ipaddress/prefix> [-H]

       cidr <-b|-q|-h|-d> <ipaddress> <-b|-q|-h|-d|-p> <mask|prefix> [-H]

DESCRIPTION
       cidr is a utility for determining the network address and broadcast ad-
       dress for a CIDR	subnet.	 It takes as input an ip address  and  netmask
       in  binary,  dotted-quad,  hexadecimal,	decimal	or prefix formats.  It
       outputs the network address, broadcast address, and a  count  (and  op-
       tionally	a list)	of valid host addresses	for the	corresponding subnet.

OPTIONS
       -v     print version information

       -b <ipaddress|mask>
	      IP address or mask as a binary number

       -q <ipaddress|mask>
	      ip address or mask as a dotted-quad

       -h <ipaddress|mask>
	      ip address or mask as a hexadecimal number

       -d <ipaddress|mask>
	      ip address or mask as a decimal number

       -p <prefix>
	      netmask as a CIDR	prefix (decimal	integer	1-32)

       -H     print a list of valid host addresses

       ipaddress
	      ip address in the	form specified by option -b, -q, -h, or	-d

       mask   netmask in the form specified by option -b, -q, -h, or -d

       prefix netmask as a CIDR	prefix (decimal	integer	1-32)

EXAMPLES
       cidr 192.168.14.56/27

       cidr 192.168.14.56/27 -H

       Note:   The  above forms	only support dotted-quad ip address and	prefix
       netmask.

       cidr -q 192.168.14.56 -h	ffffff00

       cidr -q 192.168.14.56 -q	255.255.255.0 -H

       cidr -h 0xfe12abcf -b 11111111111111111111111100000000

       cidr -d 2929937821 -p 32

       cidr -b 11110000101010100101010111001100	-p 24 -H

BUGS
       Hangs on	calculation of 255.255.255.255/32

COPYRIGHT
       cidr.c -- determine CIDR	network	and broadcast address from IPv4	ip ad-
       dress and netmask

       Copyright (C) 2000 Robert L. Lineberger

       This program is free software; you can redistribute it and/or modify it
       under the terms of the GNU General Public License as published  by  the
       Free  Software Foundation; either version 2 of the License, or (at your
       option) any later version.

       This program is distributed in the hope that it	will  be  useful,  but
       WITHOUT	ANY  WARRANTY;	without	 even  the  implied  warranty  of MER-
       CHANTABILITY or FITNESS FOR A PARTICULAR	PURPOSE.  See the GNU  General
       Public License for more details.

       You should have received	a copy of the GNU General Public License along
       with this program; if not, write	to the Free Software Foundation, Inc.,
       59 Temple Place,	Suite 330, Boston, MA  02111-1307  USA

AUTHOR
       Robert L. Lineberger <robert@geeksoul.com>

CONTRIBUTORS
       David A.	Bandel

       Iain Lea

       Herman Robers

SEE ALSO
       RFC 1878

								       CIDR(1)

NAME | SYNOPSIS | DESCRIPTION | OPTIONS | EXAMPLES | BUGS | COPYRIGHT | AUTHOR | CONTRIBUTORS | SEE ALSO

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