Golang Linux quick installer

golang_linux_quick_install.md

cat > /tmp/install-go.sh << 'EOF'
#!/usr/bin/env bash

set -o errexit
set -o pipefail
set -o nounset

if [ "${1:-}" = '-v' ]; then
    echo 'INFO: Verbose debug output enabled' 1>&2
    set -o xtrace
    shift
fi

VERSION='1.14'

OLD="$(go version | awk '{ print $3 }' | sed 's/^go//')"

curl -sSLO "https://dl.google.com/go/go${VERSION}.linux-amd64.tar.gz"
if [ -e '/usr/local/go' ]; then
    sudo rm -rf "/usr/local/go-${OLD}"
    sudo mv '/usr/local/go' "/usr/local/go-${OLD}"
fi
sudo tar -C '/usr/local' -xzf "go${VERSION}.linux-amd64.tar.gz"
rm "go${VERSION}.linux-amd64.tar.gz"
rm -rf /home/*/go/pkg
EOF

chmod a+x /tmp/install-go.sh
/tmp/install-go.sh -v

install-go.sh

#!/usr/bin/env bash

set -o errexit
set -o pipefail
set -o nounset

if [ "${1:-}" = '-v' ]; then
    echo 'INFO: Verbose debug output enabled' 1>&2
    set -o xtrace
    shift
fi

VERSION='1.14'

OLD="$(go version | awk '{ print $3 }' | sed 's/^go//')"

curl -sSLO "https://dl.google.com/go/go${VERSION}.linux-amd64.tar.gz"
if [ -e '/usr/local/go' ]; then
    sudo rm -rf "/usr/local/go-${OLD}"
    sudo mv '/usr/local/go' "/usr/local/go-${OLD}"
fi
sudo tar -C '/usr/local' -xzf "go${VERSION}.linux-amd64.tar.gz"
rm "go${VERSION}.linux-amd64.tar.gz"
rm -rf /home/*/go/pkg