Changed expr usage to bash arithmetic

[pgl]

No description provided.

[mcandre]

I was able to remove some of the expr warnings...

7946630

But I'm still getting a few expr warnings for the strings on lines 13, 15, 17, and 19.

https://github.com/mcandre/mcandre/blob/7946630dd2dcfb4c0d794f137eb5c68333a4fa2c/sh/fizzy.sh#L13-L19

Trace:

$ shellcheck fizzy.sh 

In fizzy.sh line 13:
    expr "FizzBuzz"
    ^-- expr is antiquated. Consider rewriting this using $((..)), ${} or [[ ]].


In fizzy.sh line 15:
    expr "Fizz"
    ^-- expr is antiquated. Consider rewriting this using $((..)), ${} or [[ ]].


In fizzy.sh line 17:
    expr "Buzz"
    ^-- expr is antiquated. Consider rewriting this using $((..)), ${} or [[ ]].


In fizzy.sh line 19:
    expr "$1"
    ^-- expr is antiquated. Consider rewriting this using $((..)), ${} or [[ ]].

Any idea how to resolve these? I tried $(("FizzBuzz")), but that didn't seem to work.

[mcandre]

I've incorporated your suggestions into my commits. Thanks again!