This command will send an HTTP request to the URL "https://devhints.io/awk" with the user agent string "Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:77.0) Gecko/20100101 Firefox/77.0" using the curl command.
curl -A "Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:77.0) Gecko/20100101 Firefox/77.0" https://devhints.io/awk