1. This script uses the system gc installation in /usr to (bootstrap) Go from source
2. e.g. Under Fedora, dnf install -y gcc-go
3. git clone https://go.googlesource.com/go
4. Set GO-VERSION file content to a string like go1.11
5. Run ./go-build, ./go-install
6. Or source go-build to set GOROOT_FINAL, GOROOT_BOOTSTRAP in the interactive shell