title: How to make ipcal take list of ip address in cidr
body: <p>i am able to make ipcal to give me the NETMASK using the code below.how can i make it take a list of ip address in cidr notation like 41.80.0.0/17 and give me only the ip address of netmask.if i pipe a list of ip addresses(in cidr formart) will it work. thanks</p>
  
  <pre><code>#!/bin/bash
  
  echo -n "Enter IP address in CIDR notation: (eg. 192.168.0.0/24) "
  read IP_ADDRESS
  
  # Calculate network values
  BROADCAST=$(ipcalc -b $IP_ADDRESS)
  NETWORK=$(ipcalc -n $IP_ADDRESS)
  NETMASK=$(ipcalc -m $IP_ADDRESS)
  
  echo "Set up your ifcfg file with the following values:"
  echo $BROADCAST
  echo $NETWORK
  echo $NETMASK
  </code></pre>