Sample for REST build call in ANT or CURL?

I'm having difficulties in calling the REST api for builds/build results form within
ANT or Curl - and I have not figured out why.. In Firefox the request works and returns the
json data - but ANT get fails and I'm not familiar with curl...

Sample
https://<server>:<port>/ccm/resource/virtual/build/results?definition=<build name>&_prettyPrint=true

Has anyone a good running sample that he can share?
Regards,
Achim