Hi!
> The correct syntax is [ -n "${var}" ] (notice the quotes).
> Thanks to Vasilis.
A security notice:
Don't use more then one expression in one test call.
Use instant two test calls:
if [ -z "$x" ] && [ -z "$y" ]; then
echo x and y are empty
fi
if [ -z "$x" ] || [ -z "$y" ]; then
echo x or y is empty
fi
If more then one expression is done with test the comparison is exploitable.
It's a design error of the UNIX shell and can't be fixed.
Regards
Alina
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