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x2x notes

Basic usage

There are two forms of using x2x: without ssh and with ssh. In this document we refer of two hosts: slave and master, where slave is the one who receive connections and the master is the one who controls the slave and where x2x is installed.

Using x2x without ssh

If you are using x2x without ssh, you need to approve access to the hosts with the xhost command. So, the host that will receive the connection need to authorize the controller host.

On slave:

$ xhost +master

On master:

$ x2x -to slave:0 -east

Using x2x with ssh

Although you one can be using x2x without ssh, make use of ssh turns things much easier. On slave, just do:

$ ssh -X master 'x2x -to :0 -east'

Troubleshooting

Error "No protocol specified"

If you get an error like "No protocol specified", you are probably trying to be using x2x without ssh but you forgot to add permissions to the master host with the xhost command. Check it out.