Installing Go 1.9 on Ubuntu 16.04

To install Go 1.9 on Ubuntu 16.04, first add the PPA and install the golang-1.9-go package:

sudo add-apt-repository ppa:gophers/archive
sudo apt update
sudo apt-get install golang-1.9-go

The add go the go path to the your PATH:

echo "export PATH=\$PATH:/usr/lib/go-1.9/bin" >> ~/.profile

Then finally load the new path:

source ~/.profile

Although everything should now work, it might be wise to just log out and back in to make sure other programs also get the updated path.