Easy-peasy Go update; a bash script using the latest available version (default) or a specific archive name; ZSH is assumed to be the default shell.

update_go.sh

#!/usr/bin/env bash

# Script adapted from https://golangcode.com/updating-go-on-ubuntu/

set -o errexit

main () {
  if ! [[ -z "$1" ]]
  then
    printf "❕ To update Go to the latest version, you do not need to provide any arguments.\nAlternatively, provide just the name of the specific Linux archive, e.g. go1.19.linux-amd64.tar.gz\n\n"
  fi

  # -s to silence output, -L to deal with Moved Permanent HTTP status
  archiveName="$(curl -Ls https://golang.org/VERSION?m=text | head -n1).linux-amd64.tar.gz"

  if [[ $# -ne 1 ]]
  then
    printf "No valid archive name provided. Using the latest available archive: $archiveName\n\n"
  else
    archiveName=$1
  fi

  shouldAddToPath=false

  if ! command -v go &> /dev/null
  then
      printf "⚠ Go not installed"

      shouldAddToPath=true
  else
       goVersion=$(go version)

       printf "Removing $goVersion\n"

      sudo rm -r /usr/local/go/
  fi

  printf "\n\n⏳ Downloading and installing version $archiveName\n\n"
  wget https://dl.google.com/go/$archiveName

  sudo tar -C /usr/local -xzf $archiveName

  if [[ $shouldAddToPath = true ]]
  then
    export PATH=$PATH:/usr/local/go/bin

    printf "\nexport PATH=\$PATH:/usr/local/go/bin\n" >> ~/.zshrc

    printf "\n\nℹ Added go to PATH (zsh)\n\n"
    printf "❗❗❗ To start using Go, OPEN A NEW TERMINAL TAB or run \"source ~/.zshrc\"\n"
  fi

  updatedGoVersion=$(go version)

  printf "\n🎉 Success! Installed $updatedGoVersion\n"

  rm $archiveName

  printf "\n🧹 Cleaned up installation artefacts\n"
}

main "$@"