Run DNS check service on a raspberry pi

sudo apt-get install -y dnsmasq sudo service dnsmasq restart sudo apt-get install dnsutils or yum install bind-utils(for nslookup and dig tool) example: address=/EITE.ORG/1.1.1.1 Save as test.conf under /etc/dnsmasq.d/, sudo service dnsmasq restart after that EITE.ORG is point to 1.1.1.1 now.