how to get the headers of a request using curl?

[pedrotuga]

I think this is the most apropriate section, if not mods please move this topic.

I want to get the headers in a comand line so i can see them clearly.

Aparently curl is a bit weird with the way it outputs data

if I...

curl -i url > file it doesn't save anything in the file, i wonder why.

anyway, i found this solution:

curl -D file url
that saves the headers in the file, that's ok, but how do i get them outputed in the command line itself so i can see them imediatly?

EDIT
Ok... i red the man page more carefully

The solution is:

curl -I http://ubuntuforums.org