[user@machine~]$ curl -I https://example.com/missing-page

    HTTP/1.1 404 Not Found
    Date: Mon, 30 Nov 1998 00:00:00 GMT
    Server: ‎ 
    Content-Type: text/html
        

curl: (22) The requested URL returned error: 404 Not Found

[user@machine~]$ # You can go back or return to the homepage.

[user@machine~]$ exit