There is a tutorial for autostart Synergy client before logging in LightDM. But in Ubuntu 13.10 there is no file lightdm.conf anymore, so I don't know where to put lines for autorun. The point is, I want to be able to control my computer before logging in.
The line for running Synergy looks like this: greeter-setup-script=/usr/bin/synergyc <server hostname="">