Here is a short and easy guide on how you can extract your Xbox Iso’s in Linux.
First download Extract-Xiso
Extract the tar.gz file and open up your terminal.
$ cd /Downloads/extract-xiso
$ make extract-xiso make sure extract-xiso is executable
$ sudo chmod +x extract-xiso
Execute the file to make sure it works, it should output some info about the program.
Finally you can find file xbox game iso location as example cd /Downloads/cod