Script that install a particular version of Go

install-go

#!/bin/bash
#
# Download and install a particular version of Go.
#
# Assumes versions are installed at ~/.go/versions/
#
# Author : Scott Barr
# Date   : 23 Apr 2016
#

if [ $# -ne 1 ]; then
    echo "Please supply Go version eg. go1.6.2"
    exit 1
fi

mkdir -p ~/.go/versions
cd ~/.go/versions

version=$1

if [ -d ${version} ]; then
    echo "${version} already exists"
    exit 2
fi

filename=${version}.linux-amd64.tar.gz
url=https://storage.googleapis.com/golang/${filename}

wget ${url}
tar -zxf ${filename}
mv go ${version}
rm ${filename}