Seeing HTTP headers that a browser won’t show you

I learned today that tools like Firebug won’t display the headers on a file that would normally be downloaded (as opposed to say, displayed in a browser). The solution? The command line, of course. I wanted to make sure a web server was setting the right MIME type for an mp4 video.

curl -I http://path.to/videos/vid.mp4

This will just show the headers, including Content-type, which is the MIME type.

Author: Charlie Herron

Denizen of Portland, Maine; tech jack; lover / hater / whatever; philosophical dabbler. http://twitter.com/realgeek