Bash scripts to upgrade locally installed HashiCorp programs

upgrade_hashistack.sh

#!/bin/bash -eu

PACKAGE_LIST="terraform packer sentinel vagrant";
for PACKAGE in $PACKAGE_LIST; do

  # retrieve a link to the latest version of Terraform
  VERSION_LATEST=$(curl -sSLk https://releases.hashicorp.com/index.json \
    | jq ".${PACKAGE}.versions | keys | .[]" | tr -d '"' \
    | grep -v 'alpha\|beta\|rc\|oci' | sort --version-sort | tail -n1);

  # get the currently installed version
  VERSION_CURRENT=$(${PACKAGE} -v | grep -Po "([0-9]|\.)*");
  # echo "${VERSION_CURRENT}";

  # check if the latest version matches the currently installed version
  if [ "$VERSION_LATEST" = "$VERSION_CURRENT" ]; then
    echo "Already running the latest version of ${PACKAGE} == ${VERSION_CURRENT}"
    continue;
  fi

  # generate the tfe download URL
  URL=$(echo 'https://releases.hashicorp.com/'${PACKAGE}'/'"${VERSION_LATEST}"'/'${PACKAGE}'_'"${VERSION_LATEST}"'_linux_amd64.zip')
  echo $URL;

  # get the file, install it
  cd /tmp
  wget -q "${URL}"
  unzip ./${PACKAGE}_*.zip
  mv ./${PACKAGE} ~/bin
  ${PACKAGE} --version | grep -F "${VERSION_LATEST}"
  rm -rf /tmp/${PACKAGE}*
done