Check if a new domain name is available.

checkdomainname.sh

#!/bin/bash
                                                                                                                                            
# Name: Check for domain name availability
# linuxconfig.org
# Please copy, share, redistribute and improve

if [ "$#" == "0" ]; then
  echo "You need tu supply at least one argument!"
  exit 1
fi

DOMAINS=( \
'.com' '.jp' '.co.jp' '.net' '.info' '.mobi' '.org' '.tel' '.biz' '.tv' '.cc' '.in' )

ELEMENTS=${#DOMAINS[@]}

while (( "$#" )); do

  for (( i=0;i<$ELEMENTS;i++)); do
    whois $1${DOMAINS[${i}]} | egrep -q \
    '^No match|^NOT FOUND|^Not fo|AVAILABLE|^No Data Fou|has not been regi|No entri'
  if [ $? -eq 0 ]; then
    echo "$1${DOMAINS[${i}]} : available"
  fi  
  done

shift

done