A little helper script to help updating Go toolchain version on Linux.

update-go.sh

#!/bin/bash

set -e;

if [[ "$1" != "" ]]; then
  VERSION="go${1}.linux-amd64"
else
  VERSION="$(curl -s -S https://golang.org/VERSION?m=text).linux-amd64";
fi

export PATH="/usr/local/go/bin:${PATH}";
echo "Current Go: $(go version)";
echo "Upgrading to: ${VERSION}";


test -x "./go"       && rm "./go";
test -d "${VERSION}" && rm -r "${VERSION}"

wget -c -nv "https://dl.google.com/go/${VERSION}.tar.gz";
tar -xzf "${VERSION}.tar.gz";

test -d "./go";
mv "./go" "./${VERSION}";
test -d "./${VERSION}";

ln -s "./${VERSION}" "./go";

rm "${VERSION}.tar.gz";

echo "Upgraded Go: $(go version)";