A helper bash script for selectively applying Terraform resources

terraform-select-resources.sh

#!/bin/bash

plan () {
  terraform plan \
    -out=plan.output \
    -target=module.useast1.aws_eip.nateip[3]
}

apply () {
  terraform apply plan.output
}

usage () {
  echo "Usage: file-sync [-s FILE] [-l FILE]"
  echo "  -h  Help. Display this message and quit."
  echo "  -p  Create Terraform plan in az-plan"
  echo "  -a  Apply plan file"
}

[ $# -eq 0 ] && usage
while getopts ":pah" opt; do
  case "${opt}" in
    p)
      plan
      ;;
    a)
      apply
      ;;
    \?)
      echo "Invalid option: -$OPTARG" >&2
      exit 1
      ;;
    :)
      echo "Option -$OPTARG requires an argument." >&2
      exit 1
      ;;
    h | *)
      usage
      exit 0
      ;;
  esac
done
shift $((OPTIND -1))