How to get ruby version with patch number

Question

I want to get ruby version with patch number. But RUBY_VERSION returns only first three numbers.

So I wrote like this:

`ruby -v`.gsub(/ruby (\d\.\d\.\dp\d+) .*\n/, $1)

But it's a little tricky. Is there any better way to do this?

Answer 1

The constant RUBY_PATCHLEVEL gives you the current patch level.

RUBY_VERSION
=> "2.0.0"
RUBY_PATCHLEVEL
=> 247