Install multiple versions of go with ubuntu update-alternatives

install-go.sh

#!/usr/bin/env bash
set -euo pipefail
IFS=$'\n\t'

sudo apt install golang

# Set the latest default version to the highest priority.
sudo update-alternatives --install /usr/bin/go go /usr/lib/go/bin/go 20 \
    --slave /usr/bin/gofmt gofmt /usr/lib/go/bin/gofmt

# Install previous versions at lower priority.
for version in "1.17" "1.18"
do
  sudo apt install golang-${version}
  sudo update-alternatives --install /usr/bin/go go /usr/lib/go-${version}/bin/go 10 \
      --slave /usr/bin/gofmt gofmt /usr/lib/go-${version}/bin/gofmt
done

# Install go v1.10 from tarball into /usr/local/lib
version=1.19
curl -sSL https://go.dev/dl/go${version}.linux-amd64.tar.gz -O
tar xf go${version}.linux-amd64.tar.gz
rm go${version}.linux-amd64.tar.gz
sudo mv go /usr/local/lib/go-${version}
sudo update-alternatives --install /usr/bin/go go /usr/local/lib/go-${version}/bin/go 30 \
    --slave /usr/bin/gofmt gofmt /usr/local/lib/go-${version}/bin/gofmt
    
# Set 1.18 as default
sudo update-alternatives --set go /usr/local/lib/go-${version}/bin/go

Change versions with sudo update-alternatives --config go