You browse folders on a command line very much like you do in a gui. In ubuntu when you open the terminal, your current working directory will be your "/home/yourusername" directory. Commands you need to know to browse/change working directory:
"ls" - lists all the files and folders in your current working directory.
"cd" - change directory, as in "cd xonotic" to change your working directory to the xonotic folder, in the folder you were previously viewing.
"cd .." - will take you up one folder to the directory you were previously in.
Here's an example of how you might browse to your xonotic folder and run the game:
First, extract the game folder to your home folder, if you havent already. Open a terminal and observe the following commands (your paths/folder names will differ slightly from my own of course):
Code:
jaywalker@JayNix-Desktop:~$ ls
add-remove reconstructor list examples.desktop Nexuiz Templates
AssaultCube FreeBasic nvclock fan Ubuntu One
BackInTime HALO Pictures umjnx.sh
BF1942.pid lmms Public UT2004
bz98 mnjnx.sh reconstructor Videos
Desktop mprime sauerbraten www
Documents Music Source xonotic
Downloads My Games Starcraft xonotic-preview
jaywalker@JayNix-Desktop:~$ cd xonotic-preview
jaywalker@JayNix-Desktop:~/xonotic-preview$ ls
Xonotic
jaywalker@JayNix-Desktop:~/xonotic-preview$ cd Xonotic
jaywalker@JayNix-Desktop:~/xonotic-preview/Xonotic$ ls
bin64 misc xonotic-linux32-sdl
data ogg.dll xonotic-linux64-dedicated
Docs SDL.dll xonotic-linux64-glx
fteqcc server xonotic-linux64-sdl
key_0.d0pk source xonotic-linux-glx.sh
libcurl-4.dll vorbis.dll xonotic-linux-sdl.sh
libd0_blind_id-0.dll vorbisenc.dll xonotic-osx-dedicated
libfreetype-6.dll vorbisfile.dll Xonotic-SDL.app
libgmp-10.dll Xonotic.app xonotic-sdl.exe
libjpeg.dll xonotic-dedicated.exe xonotic-x64-dedicated.exe
libmodplug-1.dll xonotic.exe xonotic-x64.exe
libpng12.dll xonotic-linux32-dedicated xonotic-x64-sdl.exe
libtheora.dll xonotic-linux32-glx zlib1.dll
jaywalker@JayNix-Desktop:~/xonotic-preview/Xonotic$ sudo chmod +x xonotic-linux32-sdl
[sudo] password for jaywalker:
jaywalker@JayNix-Desktop:~/xonotic-preview/Xonotic$ ./xonotic linux32-sdl
The very last command should run the game for you.