I went to the Official Counter-strike website
and found cs_15_full.tar.gz - is this where you got the file from? It says that you need the full HLDS file first and that only server admins need the tar file.
If you are not trying to run it as a server, you may not need it. Maybe you just need to go to the links on the right hand side of the screen and download one of those.
Can you tell us more about this file:
Where did your file come from?
What do you want it to do?