Chris F.A. Johnson wrote:

> Don't call tty every time; store the result in variable and compare that.

Thanks for the suggestion

> I'd shorten the script to:
>
> if [ "$UID" -eq 0 ]
[snip]

I now used `id -u` to get the userid number directly

> num=$(( ${tty#/dev/tty} + 1 ))

Can you please explain this one ? I do not understand the # and {}
thing


Regards,
mowgli