deb mirror://mirrors.ubuntu.com/mirrors.txt trusty main universe deb mirror://mirrors.ubuntu.com/mirrors.txt trusty-updates main universe deb mirror://mirrors.ubuntu.com/mirrors.txt trusty-security main universe deb mirror://mirrors.ubuntu.com/mirrors.txt trusty-backports main universe #deb http://archive.ubuntu.com/ubuntu trusty main universe #deb http://archive.ubuntu.com/ubuntu trusty-updates main universe #deb http://archive.ubuntu.com/ubuntu trusty-security main universe #deb http://archive.ubuntu.com/ubuntu trusty-backports main universe