packer-update

packer-version.sh

function packer-version() {
  if [ -z $1 ]; then
    echo "You must specify the version!"
    return
  fi
  echo "Switching to packer version $1"
  if [ ! -f /usr/local/Cellar/packer/$1/packer ]; then
    echo "New version of packer, downloading..."
    curl -S https://releases.hashicorp.com/packer/$1/packer_$1_darwin_amd64.zip > /tmp/packer_$1.zip \
      && cd /tmp \
      && unzip /tmp/packer_$1.zip \
      && mkdir -p /usr/local/Cellar/packer/$1/ \
      && mv packer /usr/local/Cellar/packer/$1/ \
      && rm /tmp/packer_$1.zip \
      && cd -
  fi
  rm /usr/local/bin/packer
  ln -s /usr/local/Cellar/packer/$1/packer /usr/local/bin/packer
  echo "Confirming packer version from binary:"
  packer --version
}