Takes URLs on stdin, prints them to stdout if they return a 200 OK. That's literally it ¯\(ツ)/¯
Prints out the following: StatusCode Content-Length Word-Size Content-Type URL
Flags: -X used for the HTTP Request Method --user-agent to use a different user-agent
Credits go to @tomnomnom 's https://github.com/tomnomnom/hacks/tree/master/anti-burl