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
-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>
REPORTING BUGS
Report bugs to our bugtracking system:
http://bugzilla.redhat.com/bugzilla.
Copyright © 1997-2001 Red Hat, Inc.
This is free software; see the source for copying condi
tions. There is NO warranty; not even for MERCHANTABILITY
or FITNESS FOR A PARTICULAR PURPOSE.
SEE ALSO
ipcalc(3)
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