As loldier wrote: paste every line, one by one, in the terminal and press
[Enter] after each line to execute it; in that way, if an error is printed,
we can know what command failed (show us the error!).
No, only the last command affects the system, installing the SiS driver that
the previous commands build.
Those are the answers, indeed.
That 'cd' (which means "Change Directory") does not matter much: it is the
folder where the 'wget' command will download
http://xorg.freedesktop.org/releases/individual/driver/xf86-video-sis-0.10.9.tar.bz2
, where the 'tar' command will uncompress it and where the subsequent
commands (but the last) will build the driver that 'sudo make install' will
finally install.
So, if the terminal scares you (it should not), you can do the first steps
graphically:
#graphically:
#graphically: install the packages "build-essential", "xorg-dev",
"xutils-dev", "automake" and "libtool", for instance using the "Synaptic
Package Manager";
#graphically: download
http://xorg.freedesktop.org/releases/individual/driver/xf86-video-sis-0.10.9.tar.bz2
clicking on that link now;
#graphically: find "xf86-video-sis-0.10.9.tar.bz2" with your file browser (in
a folder named "Download", I guess);
#graphically: right-click on it to open the contextual menu that should
propose you to "uncompress" (or whatever it is called) the archive: do so;
#graphically: right-click on the newly created "xf86-video-sis-0.10.9" to
open the contextual menu that should propose you to "open in a terminal" (or
whatever it is called): do so and execute, one by one, the following commands
in the terminal;
autoconf
automake
./configure --prefix=/usr/local
make
sudo make install
#graphically (optional): you can close the terminal and, using the [Del] key
in your file browser (for instance), you can remove the
"xf86-video-sis-0.10.9.tar.bz2" archive and the "xf86-video-sis-0.10.9"
folder: you will not need them anymore (if everything went well above).
Do you see why commands are better instructions? They are shorter, they do
not include words like "I guess", "should" and "or whatever it is called",
which are kind of mandatory in instructions involving graphical interfaces:
the exact instruction depend on the exact version of your desktop environment
of choice.