Floating point comparison in shell

Question

Can you please suggest to me the syntax for doing floating point comparison in a Bash script? I would ideally like to use it as part of an if statement. Here is

Answer 1

### The funny thing about bash is this:
> AA=10.3
> BB=10.4
### It needs `$` for compare
> [[ $AA > $BB ]] && echo Hello
> [[ $AA < $BB ]] && echo Hello
Hello

Yeah, I know it's cheating but it works. And scientific notation does not work here.