terraform-upgrade.sh

#!/bin/bash

terraform_upgrade() {
  OS_NAME="darwin"
  if [[ "$OSTYPE" == "linux"* ]]; then
    OS_NAME="linux"
  fi

  TEMP_PATH="/tmp"

  VERSION=$(terraform -v | tail -1 | sed -E 's/.*is ([0-9\.]+)\. .*$/\1/g') \
    && TERRAFORM_ARCHIVE_PATH="$TEMP_PATH/terraform_${VERSION}_${OS_NAME}_amd64.zip" \
    && wget -P "$TEMP_PATH" "https://releases.hashicorp.com/terraform/$VERSION/terraform_${VERSION}_${OS_NAME}_amd64.zip" \
    && sudo unzip -o "$TERRAFORM_ARCHIVE_PATH" -d "$(dirname "$(which terraform)")" \
    && rm "$TERRAFORM_ARCHIVE_PATH" \
    && echo "Terraform upgraded to $VERSION version"
}