How do I exclude a range in ksh IF statement

[Tison]

In the following code,I want to exclude files in the range FROM TO ;
eg
FROM=AAABBBC
TO=AAABBBH
for file in ls
do
if [[ $file >= FROM && $file <= $TO ]]
then
ignore
else
process
fi
done

 

[gheist]

does it work as expected?

 

[Required]

Perhaps something like this:

if [[ $file < $FROM || $file > $TO ]]
then
  process
else
  ignore
fi