https://help.ubuntu.com/community/FreeNX
ubuntu 14.04
sudo apt-add-repository ppa:freenx-team/trustyUpdate Apt
sudo apt-get updateInstall FreeNX
sudo apt-get install freenx-server下载nxsetup
wget https://bugs.launchpad.net/freenx-server/+bug/576359/+attachment/1378450/+files/nxsetup.tar.gztar -xvf nxsetup.tar.gzCopy the setup script to /usr/lib/nx:
sudo cp nxsetup /usr/lib/nx/nxsetupsudo /usr/lib/nx/nxsetup --install