case command and regex

[Daniel Wayne Armstrong]

On Sun, Mar 17, 2013 at 12:25 AM, William Park <opengeometry-FFYn/CNdgSA at public.gmane.org> wrote:
>> >> if [[ $1 =~ [\+\-]([0-9]+)+$ ]]; then
>> >>         echo "Match is $1"
>> >> else
>> >>         echo "No match."
>> >> fi
>
> Also, I think you can omit \, because it loses its meaning inside [].
> So,
>     if [[ $1 =~ ^[+-][0-9]+$ ]]; then
> should do equally well.

Indeed ... that works and looks more clean.

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