Right, didn't realise the jar version worked differently. So, from the command line my syntax would be:
nohup java -Xmx100m -jar /PATH/TO/RelayNodeClient.jar public.YOURRELAYREGION.relay.mattcorallo.com 127.0.0.1:8333 &
Is this correct?
Thanks

Yep, that's exactly how I'm running it at the moment on my node (although I still need to add the xmx part).