Is there a command to determine kernal version that running?

[spaceman1013]

As the title says. Want to determine the exact version like 2.4.20 or 2.4.18

I am running a killhdinitrd 4.01a kernal on my Dtivo HDVR2.

[nams]

uname -a

:)

[spaceman1013]

Thanks nams seems like I can run the USB Backport drivers!
tivo:/$ uname -a
Linux tivo 2.4.18 #38 Thu Oct 23 10:48:29 PDT 2003 mips unknown