bobby@bobby-ubuntu:~$ sudo aptitude update
E: Type 'http://download.tuxfamily.org/3v1deb' is not known on line 50 in source list /etc/apt/sources.list
E: Type 'http://download.tuxfamily.org/3v1deb' is not known on line 50 in source list /etc/apt/sources.list
E: The list of sources could not be read.
bobby@bobby-ubuntu:~$