Linux: Bash script to check availability of domain names in differnet TLDs

If you want to check whether your desired domain name is available or not in different extensions, it’s tiresome to search it for each and every tld. There are also limits of performing query to whois on websites, where they will not allow you unlimited whois information queries. It’s better to have your own script which will tell you the availibility of domain name in different extensions, right from your terminal.

Below script will check your domain name for TLDs .com, .net, .org, .info, .us, .co, .tel, .tv, .biz, .cc, .ru, .eu, .in, .it, .sk, .com.au, .sh, .re and .dk
But you can add other TLDs also if you want.

First create a file, e.g. chkWhois.sh, and give it proper permission to execute.

touch chkWhois.sh

chmod 744 chkWhois.sh

Now, copy below code to this newly created file

#!/bin/bash 

if [ "$#" == "0" ]; then

    echo "You need to supply at least one domain name!" 

    exit 1

fi

DOMAINS=( '.com' '.net' '.info' '.us' '.co' \ 

'.org' '.tel' '.biz' '.tv' '.cc' '.eu' '.ru' \ 

'.in' '.it' '.sk' '.com.au' '.sh' '.re' '.dk' )

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

Run this for your desired name to check,

./chkWhois.sh kalpesh

You’ll get output will all the TLD’s your name is available for!

kalpesh.us : available

kalpesh.tel : available

kalpesh.cc : available

kalpesh.eu : available

kalpesh.ru : available

kalpesh.sk : available

kalpesh.sh : available

kalpesh.re : available

kalpesh.dk : available

Have fun!