IPCALC(1)                             RH                             IPCALC(1)



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 .© 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.



Red Hat, Inc.                    April 30 2001                       IPCALC(1)