DNS Checker

gistfile1.txt

#!/bin/bash
echo "DNS Checker v1.0 David Mcanulty 2017"
echo -e "\t- # repeatably tests dns and records success/failures\n"

success=0
failure=0
dnshost=$1
datestamp=$(date)
red=$(tput setaf 1)
green=$(tput setaf 2)
reset=$(tput sgr0)
dim=$(tput dim)

if [[ -z "${dnshost}" ]] ;then
    echo "This script requires a host to lookup on the commandline to run"
    echo "for example: $0 google.com"
    exit 1
fi

while sleep 1; do
    clear
    echo "There have been ${green}#${success} successful${reset} lookups of $dnshost since $datestamp"
    echo -e "There have been ${red}#${failure} failures${reset}${dim}\n\n"
    dig +short $1
    if [[ $? -gt 0 ]]; then
        ((failure++))
    else
        ((success++))
    fi
    echo -e "${reset}"
done