Tonto doesn't have it's own emulator. There is a way to use the emulator in Pronto Edit with Tonto, however. In Tonto, go to "file", "preferences", and select the "helpers" tab. You will see a list. Use browse to find "emulator.exe" for your type remote. Of course this means that you must install Pronto Edit, but once you do, all you need is the emulator.exe program for your remote.
Now I have no idea whether PE will install on a Linux machine. If it won't, find a Windows machine install it, and then copy just the emulator program(it will work as a standalone) onto your machine. Of course, I also have no idea whether the emulator itself will work under Linux, but it's worth a try.
Jim L