#!/bin/sh awk -f /usr/lib/common.awk -f - $* <<EOF BEGIN { ipaddr=ip2int(ARGV[1]) netmask=ip2int(ARGV[2]) network=and(ipaddr,netmask) broadcast=or(network,compl(netmask)) start=or(network,and(ip2int(ARGV[3]),compl(netmask))) limit=network+1 if (start<limit) start=limit end=start+ARGV[4] limit=or(network,compl(netmask))-1 if (end>limit) end=limit print "IP="int2ip(ipaddr) print "NETMASK="int2ip(netmask) print "BROADCAST="int2ip(broadcast) print "NETWORK="int2ip(network) print "PREFIX="32-bitcount(compl(netmask)) # range calculations: # ipcalc <ip> <netmask> <start> <num> if (ARGC > 3) { print "START="int2ip(start) print "END="int2ip(end) } } EOF