Linux app to find the HTTP server header
I'm not sure what the official name is, but I'm referring to the server header (e.g.: Apache/1.3.29 (Unix) mod_perl/1.29 PHP/4.4.1 mod_ssl/2.8.16 OpenSSL/0.9.7g). Services like netcraft allow you to see them. What linux app would I use to find these server headers? Thanks.