While not null

hawk__0 · 11-19-2009, 05:16 PM

Can bash do this? I've been trying to find a solution for a while now to no avail... basically looking for the equiv to this, but with just "not null":

while [ $ans != "xY" ]; do
....
done

GrapefruiTgirl · 11-19-2009, 05:24 PM

while [ "$ans" ]; do

or

while [ -n "$ans" ]; do

should work I think.. You just want it to continue as long as $ans is *something* right?

Sasha

hawk__0 · 11-19-2009, 06:10 PM

I want it not not error out if the entry is blank, or not proceed if the entry is blank

GrapefruiTgirl · 11-19-2009, 06:21 PM

Right. Did you try what I wrote? It should exit the while..done loop if $ans is an empty string, and continue with the rest of the script. It won't error out.

I'm figuring you have some code in between the while and the done that is affecting the value of $ans; so, when $ans ends up being empty, the loop stops looping.

Sasha