install_golang.sh

#!/bin/bash

GO_VERSION=${GO_VERSION:=1.15.2}

cd /tmp/ \
&& wget -q https://dl.google.com/go/go$GO_VERSION.linux-amd64.tar.gz \
&& rm -rf /usr/local/go && sudo tar -C /usr/local -xzf go*.tar.gz \
&& rm go$GO_VERSION*.gz

echo "Creating default Go folders"
mkdir -p $HOME/go/bin

if [[ -z "${GOROOT}" ]]; then
    echo "GOROOT is undefined --> creating defaut env variables"
    echo -e '\nexport PATH=$HOME/go/bin:$PATH
export GOROOT=/usr/local/go
export GOPATH=$HOME/go
export GO111MODULE=auto
export PATH=$PATH:$GOROOT/bin:$GOPATH/bin' >> $HOME/.profile;

    source $HOME/.profile
else
    echo "GOROOT env is alredy exists: $GOROOT"
fi

echo "Done"