Initial import.

tools/install-go.sh

@@ -0,0 +1,50 @@
+#!/usr/bin/env bash
+
+set -euxo pipefail
+
+INSTALL_DIR="/usr/local/bin"
+GODEB=https://godeb.s3.amazonaws.com/godeb-${ARCH}.tar.gz
+GOVERSION=1.20.3
+
+preflight () {
+
+    if [ "$(uname -s)" != "Linux" ]
+    then
+	echo '[!] godeb is only supported on Linux.' > /dev/stderr
+	exit 1
+    fi
+
+    case "$(uname -m)" in
+	amd64) ARCH="amd64" ;;
+	arm64) ARCH="arm64" ;;
+	*)
+	    echo "[!] $(uname -m) is an unsupported architecture." > /dev/stderr
+	    echo '[!] supported architectures: amd64, arm64' > /dev/stderr
+	    ;;
+    esac
+}
+
+install_godeb () {
+    if [ -x "${INSTALL_DIR}/godeb" ]
+    then
+	return 0
+    fi
+
+    local GODEB_ARCHIVE="${GODEB##*/}"
+
+    pushd /tmp
+    curl -LO "${GODEB}"
+    tar xzf "${GODEB_ARCHIVE}"
+    sudo mv godeb "${INSTALL_DIR}/"
+    rm "${GODEB_ARCHIVE}"
+    popd
+}
+
+install_go {
+    pushd /tmp
+    echo '[*] installing go - this will request sudo'
+    godeb install "${GOVERSION}"
+    # note: deliberately leaving this in /tmp for inspection
+    # if needed.
+    popd
+}