domain-filter.sh

#!/bin/bash

# domain-filter.sh
# Reads URLs from stdin, writes the valid ones to stdout
# Based off of http://linuxconfig.org/check-domain-name-availability-with-bash-and-whois
# @author Yousef Amar <yousef@amar.io>

while read line
do
	whois "$line" | grep -Eq '^No match|^NOT FOUND|^Not fo|AVAILABLE|^No Data Fou|has not been regi|No entri'
	if [ $? -eq 0 ]; then
		echo "$line"
	fi
done