Download, install, export and stage Go for linux

get-golang.sh

#!/usr/bin/env bash

# CHANGE THIS TO THE VERSION YOU WANT TO INSTALL
VERSION="1.7.4"
UPDATED="false"

# CHECKING TO SEE IF WE ARE UPDATING OR INSTALLING NEW
CURRENT=`echo \`go version\` | grep -o '1\..'`
if (( ${VERSION##*.} > ${CURRENT##*.} )); then
    UPDATED="true"
    rm -rf /usr/local/go/*  
fi

echo "Downloading golang tarball..."
sudo curl -o go${VERSION}.linux-amd64.tar.gz https://storage.googleapis.com/golang/go${VERSION}.linux-amd64.tar.gz

echo "Extracting and installing into /usr/local/go..."
sudo tar -C /usr/local -xzf go${VERSION}.linux-amd64.tar.gz

if [[ UPDATED -eq "false" ]]; then
    exit 0
fi

echo "Creating golang workspace..."
mkdir -p $HOME/code/go/src/github.com/

echo "Exporting golang PATH environment variables..."
echo "\n#GOLANG" >> ~/.bashrc
echo 'export GOPATH=$HOME/code/go' >> ~/.bashrc
echo 'export GOROOT=/usr/local/go' >> ~/.bashrc
echo 'export PATH=$PATH:$GOROOT/bin' >> ~/.bashrc

echo "Successfully installed golang, please run 'source ~/.bashrc | go version'"