Which command i can use to see what my current installed software libraries use from the Kernel 2.6? I want to know this so I can check if it would work fine in case I upgraded my Kernel to 3.1.
You can try using this command, which is distribution-independent:
This gives a full list of the libraries installed. If you pipe it to less, you will be able to scroll up or down:
ldconfig -p | less