I asked about this before, but seems you cannot unless you have a GUI on your Fedora
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Just to let you know messi30, I figured it out how to run speedtest on a linux box, you would need these :
1. fluxbox
2. xfonts-base
3. xdm
4. firefox
5. flashplugin
6. vnc4server
since you're on Fedora, I think you can use yum -y install to get all those packages and dependencies