Amazon linux hashicorp install script

hashi-install.sh

#!/bin/bash
# Author: Jason Wieringa
#
# General script for installing Hashicorp tools.
set -e

: ${PRODUCT:?"Set to desired Hashicorp product"}
: ${VERSION:?"Set to desired Hashicorp product version"}

SYSTEM=$(uname | tr '[:upper:]' '[:lower:]')
UNAME=$(uname -m)
NAME=${PRODUCT}_$(sed 's/\./_/g' <<< "${VERSION}")

if [ "$UNAME" != "x86_64" ]; then
  ARCH=386
else
  ARCH=amd64
fi

mkdir -p /root/.gnupg
curl --retry 10 -sf https://keybase.io/hashicorp/pgp_keys.asc | gpg --import

TEMP_DIR=$(mktemp -d)

pushd $TEMP_DIR
curl --retry 10 -sfO https://releases.hashicorp.com/${PRODUCT}/${VERSION}/${PRODUCT}_${VERSION}_${SYSTEM}_${ARCH}.zip
curl --retry 10 -sfO https://releases.hashicorp.com/${PRODUCT}/${VERSION}/${PRODUCT}_${VERSION}_SHA256SUMS
curl --retry 10 -sfO https://releases.hashicorp.com/${PRODUCT}/${VERSION}/${PRODUCT}_${VERSION}_SHA256SUMS.sig
gpg --batch --verify ${PRODUCT}_${VERSION}_SHA256SUMS.sig ${PRODUCT}_${VERSION}_SHA256SUMS
egrep "_${SYSTEM}_${ARCH}" ${PRODUCT}_${VERSION}_SHA256SUMS | sha256sum --check -
unzip -o -d $TEMP_DIR "${PRODUCT}_${VERSION}_${SYSTEM}_${ARCH}.zip"
mv $TEMP_DIR/terraform /usr/local/bin/${NAME}
popd
rm -rf $TEMP_DIR

if [ ! -f /usr/local/bin/${NAME} ]; then
  echo "Failed to install ${PRODUCT} ${VERSION}"
else
  echo "${PRODUCT} ${VERSION} successfully installed"
fi