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
    -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 net-
    masks, 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.red-
    hat.com/bugzilla.

COPYRIGHT
    Copyright (C) 1997-2001 Red Hat, Inc.
    This is free software; see the source for copying conditions.
    There is NO warranty; not even for MERCHANTABILITY or FITNESS
    FOR A PARTICULAR PURPOSE.

SEE ALSO
    ipcalc(3)