ipcalc - Unix, Linux Command

NAME

ipcalc - perform simple manipulation of IP addresses

SYNOPSIS

ipcalc [OPTION]... <IP address>[/prefix] [netmask]

DESCRIPTION

ipcalc provides a simple way to calculate IP information for a host. The various options specify what information ipcalc should display on standard out. Multiple options may be specified. An IP address to operate on must always be specified. Most operations also require a netmask or a CIDR prefix as well.

OPTIONS

Tag	Description

-c, --check
	Validate the IP address under the specified family. If no address family is specified, IPv4 is assumed.
-4, --ipv4	Specify IPv4 address family (default).
-6, --ipv6	Specify IPv6 address family.
-b, --broadcast
	Display the broadcast address for the given IP address and netmask.
-h, --hostname
	Display the hostname for the given IP address.
-m, --netmask
	Calculate the netmask for the given IP address. It assumes that the IP address is in a complete class A, B, or C network. Many networks do not use the default netmasks, in which case an inappropriate value will be returned.
-p, --prefix
	Show the prefix for the given mask/IP address.
-n, --network
	Display the network address for the given IP address and netmask.
-s, --silent
	Don’t ever display error messages.

AUTHORS

Erik Troan <ewt@redhat.com>
Preston Brown <pbrown@redhat.com>

Tag	Description
IPv6 supported wedged in by David Cantrell <dcantrell@redhat.com>

REPORTING BUGS

Report bugs at http://bugzilla.redhat.com/