Re: [smartmontools-support] Misleading text: $(()) is not bash specific

[Chris D. <ch...@ch...>]

On 2014-01-15 19:09:21 +0100, Christian Franke wrote:
> No, the exponentiation operator (2**i) is also not part of POSIX.

Good catch, I missed that.

> It would probably make sense to use a more portable example, e.g.:
> 
> val=$?; mask=1
> for i in 0 1 2 3 4 5 6 7; do
>   echo "Bit $i: $(((val & mask) && 1))"
>   mask=$((mask << 1))
> done

That looks good to me. You could also use `let i++' and
`[ "$i" -lt 8 ]', but I don't think it offers much advantage.