I am trying to enable esm for a system running Linux Mint 13, based on Ubuntu 14.04. I enabled esm on my Ubuntu One account, and it asked me to run "sudo ua attach [my token]". I ran that command, but the response was: "sudo: ua: command not found". I checked which package needed to be installed for that. The only info I could find said it was ubuntu-advantage-tools, which is already installed. The only command in that package I could find related to esm was "sudo ubuntu-advantage enable-esm [username:password]". I tried that, which seemed to work, did a sudo apt-get update, and sudo apt-get upgrade. It failed to find any of the upgradable packages in the esm repository. I'm assuming the problem is that missing ua command, and not being able to send the token, but I'm not sure.
System info:
Description: Linux Mint 13 Maya
Release: 13
Hello,
the "ua" command is available in ubuntu-
You probably have an older version installed, where the ESM support was via "enable-esm user:pass" command.