Check length of Shell Variable

Shell Programming and Scripting
1

I am using a Korn Shell script..

I need to verify the length of a variable..
ie number=12345

I need then to check 12345 to make sure its no longer than 5 digits...

Can you help?

2

how about wc -c

3

The lenght (number of characters) in a variable for a variable called "varname" is

echo "length is ${#varname}"
4

And a third way to do it is using the expr command

expr length $varname

Peace
ZB

5

Thanks folks - Just couldnt remember how to do it...