alias externalip="dig @resolver1.opendns.com myip.opendns.com +short"There’s a lot of websites that help you resolve your external ip address.
Some search engines will just return it when you search “What is my ip address” as well now.
But, these sites go down or are abandoned. Do you really want your deployment script to fail years from now because some service decided enough was enough and bailed out of the ip service business?
Instead, resolve directly with the resolver. It’s what they’re good at after all. Drop the above into your script file
alias externalip="dig @resolver1.opendns.com myip.opendns.com +short"Now when you load again, you can just call externalip and get your external ip address.