Claim my server

I am trying to use a gm.link to claim ownership of my self hosted server running as a service on a Debian Linux machine. I think I add the link to my hosting.cfg but am unsure as to the syntax In hosting.cfg + is not used and = is not used so I ether use gm.link with a space and then the provided token in quotes or just enter the token and save the hosting file. I might be wrong. Some direction would be helpful. Thanks