Installs Go by installing GVM

install-go.sh

#!/usr/bin/env bash

GO_VERSION="1.15"

die() {
	echo "$*" >&2
	exit 444
}

install_go() {
  if [[ -s "${HOME}/.gvm/" ]]; then
    echo "Gvm was installed."
  else
    echo ""
    echo -en "Gvm will be installed. Do you confirm? [y/n] "
    read answer
    echo ""
    case "$answer" in
      "y" ) "Installation will be start. Please do not cancel the operation. Otherwise you system can be broke." ;;
      "Y" ) "Installation will be start. Please do not cancel the operation. Otherwise you system can be broke." ;;
      "n" ) die "Okay. Update service is cancelled." ;;
      "N" ) die "Okay. Update service is cancelled." ;;
      *   ) echo "Please use only Y or N" ;;
    esac
    bash < <(zsh -s -S -L https://raw.githubusercontent.com/moovweb/gvm/master/binscripts/gvm-installer)
  fi

  if [[ -e "${HOME}/.gvm/gos/go${GO_VERSION}/bin/go" ]]; then
    echo "Go was installed."
  else
    echo ""
    echo -en "Go ${GO_VERSION} will be installed. Do you confirm? [y/n] "
    read answer
    echo ""
    case "$answer" in
      "y" ) echo "Installation will be start. Please do not cancel the operation. Otherwise you system can be broke." ;;
      "Y" ) echo "Installation will be start. Please do not cancel the operation. Otherwise you system can be broke." ;;
      "n" ) die "Okay. Update service is cancelled." ;;
      "N" ) die "Okay. Update service is cancelled." ;;
      *   ) echo "Please use only Y or N" ;;
    esac
    gvm install go${GO_VERSION} && gvm use go${GO_VERSION}
    go version
  fi
}

main() {
	cd ${HOME}
	install_go
}

main