I want getopt to send my user to a help page if they don't supply an option. Goal: If the user specifies no command line or `-h`, set `flag_help` to 1.

```
flag_help=0
flag_test_user=0
flag_demo_user=1
flag_skip_initial_pause=0

while getopts 'hdts' flag; do
    case ${flag} in
        h)
            flag_help=1
            ;;
        d)
            echo "Using Demo Mode"
            flag_test_user=0
            flag_demo_user=1
            ;;
        t)
            echo "Using Test Mode"
            flag_test_user=1
            flag_demo_user=0
            ;;
        s)
            echo "Will skip initial pause.."
            flag_skip_initial_pause=1
            ;;
        *)
            flag_help=1
            ;;
    esac
done

echo "flag_help: $flag_help"

```

I then test it:

```
$ sh tools/setup-demo.sh
flag_help: 0

```

```
$ sh tools/setup-demo.sh  -h
flag_help: 1

```

I must have some oddball error in there, but I'm not sure what. To be safe, I did some research and there is a great example thread here:
[An example of how to use getopts in bash](https://stackoverflow.com/questions/16483119/an-example-of-how-to-use-getopts-in-bash)

My syntax seems correct based on that.

What am I doing wrong?