UNIX for Dummies Questions & Answers

Hello,

I am having a problem setting a range of numbers for the "case" structure.

I can use [a-z] with no problems, but
when I use [0-60] it doesn't work???

Does the case struture allow numeric ranges?

eg:

echo -e "enter number between 0 and 60: \c"
read $answer

case $answer in
[0-60] ) echo "number between 0 and 60" ;;
esac

Thanks,

Joe

No, that doesn't work. The 0-6 represents, well, 0 through 6. And then the final 0 represents just zero again. You will need to use an "if" statement of some kind. In ksh, I would do:

if ((answer >= 0 && answer <=60)) ; then

You have something else that doesn't work. You can't (generally) do:
read $answer
it should be
read answer

Hi Perderabo,

Thanks for the help, greatly appreciated!

After reading your answer that [0-60] would be read [0-6] I wondered if you could specify a range for the first entry and another range for the second entry... apparenty you can... this seems to work...

echo -e "Enter a numeric value (0-100): \c"
read answer

case $answer in
[0-9] ) echo "number between 0-59" ;;
[1-5][0-9] ) echo "number between 0-59" ;;
esac

I also did it with an "If" structure and it's easilly done.

Thanks for picking out the $answer error too...

Thanks again Perderabo,

Joe