To do a GET request

curl -x GET http://10.10.10.10

To send a head request

curl -I http://10.10.10.10

To check for options

curl -X options http://10.10.10.10 -v

To add a username and a password

curl -X POST http://10.10.10.10/login.php -d "name=john&password=password" -v

To upload a file

curl http://10.10.10.10/uploads --upload-file hello.txt

To delete the uploaded file

curl -X DELETE http://10.10.10.10/uploads/hello.txt