Script for golang installation

install_go.sh

#!/bin/bash -e

GO_VERSION=1.5.1

dir=$(mktemp -d)
pushd $dir

# Remove old version
sudo rm -rf /usr/local/go

# Download new version
wget https://storage.googleapis.com/golang/go${GO_VERSION}.linux-amd64.tar.gz

# Extract into /usr/local
sudo tar -C /usr/local -xvf go${GO_VERSION}.linux-amd64.tar.gz

# Cleanup
popd
rm -rf ${dir}

# echo the commands for setting up environment variables
echo 'For the first time, you may want to run following command.
cat <<EOF >> $HOME/.profile
export PATH="/usr/local/go/bin:$PATH"
export GOROOT="/usr/local/go"
export GOPATH=$HOME/go
export PATH="$GOROOT/bin:$GOPATH/bin:$PATH"
EOF'