I am new to Linux and Ubuntu; hence detailed instructions on what specific commands to issue are welcome.

I would like to know if the following files/packages/programs are already installed on my Ubuntu 12.10, kernel 3.5.0.21, 64 bit, English:

(1) XOrg 6.9, 7.0, 7.1, 7.2, 7.3, 7.4, 7.5 or 7.6

(2) Linux kernel 2.6 or above

(3) glibc version 2.2 or 2.3

(4) XFree86-Mesa-libGL

(5) libstdc++

(6) libgcc

(7) XFree86-libs

(8) fontconfig

(9) freetype

(10) zlib

(11) gcc

According to AMD, the above files/packages/programs must be installed prior to installing the Catalyst driver for my computer. My computer has a discreet AMD Radeon HD 7730M graphics card.

If any one of the above is NOT installed, please show me from which site(s) and how to download them.

Thanks in advance

PS: I googled for how to list installed packages on my Ubuntu OS, I found and tried the following command:

Code:
dpkg --get-selections > 1.txt
After clicking the 1.txt in gedit, I saw a list of files. But it doesn't list whether I have XOrg and its version. I certainly can't find XFree86-Mesa-libGL and XFree86-libs in that list.