아래 화면에서 붉은색으로 칠해진 부분처럼 추가하면 된다.
# vi /etc/apt/source.list
deb http://ftp.kr.debian.org/debian/ wheezy main contrib non-free
deb http://security.debian.org/ wheezy/updates main contrib non-free
# wheezy-updates, previously known as 'volatile'
All packages that are included in the official Debian distribution are free according to the Debian Free Software Guidelines. This assures free use and redistribution of the packages and their complete source code. The official Debian distribution is what is contained in the main section of the Debian archive.
As a service to our users, we also provide packages in separate sections that cannot be included in the main distribution due to either a restrictive license or legal issues. They include:
Packages in this area are freely licensed by the copyright holder but depend on other software that is not free.
Packages in this area have some onerous license condition restricting use or redistribution of the software.