#!/bin/csh -f
#H# This script verifies that the hostname entered as the CLI param matches
#H# the reverse DNS of the IP that it points to.

set Name=$1
set IP=`dnsip $Name`
set RealName=`dnsname $IP`

if ("$Name" == "$RealName") then
  echo "$Name is who he claims to be."
  exit 0
else
  echo "$Name is really $RealName."
  exit 1
endif