Headers

Curl

curl -v http://example.com

Use head method (request only headers not the content)

curl -I -v http://example.com

Using Get method

curl -X GET demo.ine.local                                                                                                                                                             

Sending OPTIONS request (To check supported methods on the webpage)

curl -X OPTIONS demo.ine.local/login.php -v

curl -X POST demo.ine.local/login.php -d "name=john&password=password" -v