CRUX version and uname -o

Hello! I wonder if there is a way to find out which CRUX version that's installed on a machine? I've got an installed box in the closet that have run for a couple of years. I tried "uname -a" but it only writes the kernel version. It would be nice if the "uname -o" could output something like "GNU/Linux CRUX version 2.1" or something instead of just "GNU/Linux". Sort of like in Free BSD where you get the release version number (although in FreeBSD it's -r for operating system release and in Linux/Crux -r is kernel release). Maybe i missed something?