I have backtrack 5 running on a bootable thumbdrive.

Once loaded, from either the command line or GUI interface (after running startx) is there a command I can run that will tell me what version of backtrack 5 I am running.

I actually have two thumbdrives. 1 running Backtrack 5 (maybe RC1) and the other thumb drive is running RC2. They got mixed up and I wanted to find out how to figure our which is which.

Thank you for the help,