sudo cp /etc/apt/sources.list /etc/apt/sources.list_backup
deb http://mirrors.163.com/ubuntu/ precise main restricted universe multiverse
deb http://mirrors.163.com/ubuntu/ precise-security main restricted universe multiverse
deb http://mirrors.163.com/ubuntu/ precise-updates main restricted universe multiverse
deb http://mirrors.163.com/ubuntu/ precise-proposed main restricted universe multiverse
deb http://mirrors.163.com/ubuntu/ precise-backports main restricted universe multiverse
deb-src http://mirrors.163.com/ubuntu/ precise main restricted universe multiverse
deb-src http://mirrors.163.com/ubuntu/ precise-security main restricted universe multiverse
deb-src http://mirrors.163.com/ubuntu/ precise-updates main restricted universe multiverse
deb-src http://mirrors.163.com/ubuntu/ precise-proposed main restricted universe multiverse
deb-src http://mirrors.163.com/ubuntu/ precise-backports main restricted universe multiverse
deb http://mirrors.sohu.com/ubuntu/ precise main restricted universe multiverse
deb http://mirrors.sohu.com/ubuntu/ precise-security main restricted universe multiverse
deb http://mirrors.sohu.com/ubuntu/ precise-updates main restricted universe multiverse
deb http://mirrors.sohu.com/ubuntu/ precise-proposed main restricted universe multiverse
deb http://mirrors.sohu.com/ubuntu/ precise-backports main restricted universe multiverse
deb-src http://mirrors.sohu.com/ubuntu/ precise main restricted universe multiverse
deb-src http://mirrors.sohu.com/ubuntu/ precise-security main restricted universe multiverse
deb-src http://mirrors.sohu.com/ubuntu/ precise-updates main restricted universe multiverse
deb-src http://mirrors.sohu.com/ubuntu/ precise-proposed main restricted universe multiverse
deb-src http://mirrors.sohu.com/ubuntu/ precise-backports main restricted universe multiverse
deb http://mirror.lupaworld.com/ubuntu precise main restricted universe multiverse
deb http://mirror.lupaworld.com/ubuntu precise-security main restricted universe multiverse
deb http://mirror.lupaworld.com/ubuntu precise-updates main restricted universe multiverse
deb http://mirror.lupaworld.com/ubuntu precise-backports main restricted universe multiverse
deb http://mirror.lupaworld.com/ubuntu precise-proposed main restricted universe multiverse
deb-src http://mirror.lupaworld.com/ubuntu precise main restricted universe multiverse
deb-src http://mirror.lupaworld.com/ubuntu precise-security main restricted universe multiverse
deb-src http://mirror.lupaworld.com/ubuntu precise-updates main restricted universe multiverse
deb-src http://mirror.lupaworld.com/ubuntu precise-backports main restricted universe multiverse
deb-src http://mirror.lupaworld.com/ubuntu precise-proposed main restricted universe multiverse
deb http://centos.bitcomm.cn/ubuntu precise main restricted universe multiverse
deb http://centos.bitcomm.cn/ubuntu precise-security main restricted universe multiverse
deb http://centos.bitcomm.cn/ubuntu precise-updates main restricted universe multiverse
deb http://centos.bitcomm.cn/ubuntu precise-backports main restricted universe multiverse
deb http://centos.bitcomm.cn/ubuntu precise-proposed main restricted universe multiverse
deb-src http://centos.bitcomm.cn/ubuntu precise main restricted universe multiverse
deb-src http://centos.bitcomm.cn/ubuntu precise-security main restricted universe multiverse
deb-src http://centos.bitcomm.cn/ubuntu precise-updates main restricted universe multiverse
deb-src http://centos.bitcomm.cn/ubuntu precise-backports main restricted universe multiverse
deb-src http://centos.bitcomm.cn/ubuntu precise-proposed main restricted universe multiverse
deb http://debian.ustc.edu.cn/ubuntu/ precise main multiverse restricted universe
deb http://debian.ustc.edu.cn/ubuntu/ precise-backports main multiverse restricted universe
deb http://debian.ustc.edu.cn/ubuntu/ precise-proposed main multiverse restricted universe
deb http://debian.ustc.edu.cn/ubuntu/ precise-security main multiverse restricted universe
deb http://debian.ustc.edu.cn/ubuntu/ precise-updates main multiverse restricted universe
deb-src http://debian.ustc.edu.cn/ubuntu/ precise main multiverse restricted universe
deb-src http://debian.ustc.edu.cn/ubuntu/ precise-backports main multiverse restricted universe
deb-src http://debian.ustc.edu.cn/ubuntu/ precise-proposed main multiverse restricted universe
deb-src http://debian.ustc.edu.cn/ubuntu/ precise-security main multiverse restricted universe
deb-src http://debian.ustc.edu.cn/ubuntu/ precise-updates main multiverse restricted universe
deb http://mirrors.tuna.tsinghua.edu.cn/ubuntu/ precise main restricted universe multiverse
deb http://mirrors.tuna.tsinghua.edu.cn/ubuntu/ precise-security main restricted universe multiverse
deb http://mirrors.tuna.tsinghua.edu.cn/ubuntu/ precise-updates main restricted universe multiverse
deb http://mirrors.tuna.tsinghua.edu.cn/ubuntu/ precise-backports main restricted universe multiverse
deb http://mirrors.tuna.tsinghua.edu.cn/ubuntu/ precise-proposed main restricted universe multiverse
deb-src http://mirrors.tuna.tsinghua.edu.cn/ubuntu/ precise main restricted universe multiverse
deb-src http://mirrors.tuna.tsinghua.edu.cn/ubuntu/ precise-security main restricted universe multiverse
deb-src http://mirrors.tuna.tsinghua.edu.cn/ubuntu/ precise-updates main restricted universe multiverse
deb-src http://mirrors.tuna.tsinghua.edu.cn/ubuntu/ precise-backports main restricted universe multiverse
deb-src http://mirrors.tuna.tsinghua.edu.cn/ubuntu/ precise-proposed main restricted universe multiverse
deb http://mirrors.4.tuna.tsinghua.edu.cn/ubuntu/ precise main restricted universe multiverse
deb http://mirrors.4.tuna.tsinghua.edu.cn/ubuntu/ precise-security main restricted universe multiverse
deb http://mirrors.4.tuna.tsinghua.edu.cn/ubuntu/ precise-updates main restricted universe multiverse
deb http://mirrors.4.tuna.tsinghua.edu.cn/ubuntu/ precise-backports main restricted universe multiverse
deb http://mirrors.4.tuna.tsinghua.edu.cn/ubuntu/ precise-proposed main restricted universe multiverse
deb-src http://mirrors.4.tuna.tsinghua.edu.cn/ubuntu/ precise main restricted universe multiverse
deb-src http://mirrors.4.tuna.tsinghua.edu.cn/ubuntu/ precise-security main restricted universe multiverse
deb-src http://mirrors.4.tuna.tsinghua.edu.cn/ubuntu/ precise-updates main restricted universe multiverse
deb-src http://mirrors.4.tuna.tsinghua.edu.cn/ubuntu/ precise-backports main restricted universe multiverse
deb-src http://mirrors.4.tuna.tsinghua.edu.cn/ubuntu/ precise-proposed main restricted universe multiverse
IPv6-Only 地址
deb http://mirrors.6.tuna.tsinghua.edu.cn/ubuntu/ precise main multiverse restricted universe
deb http://mirrors.6.tuna.tsinghua.edu.cn/ubuntu/ precise-backports main multiverse restricted universe
deb http://mirrors.6.tuna.tsinghua.edu.cn/ubuntu/ precise-proposed main multiverse restricted universe
deb http://mirrors.6.tuna.tsinghua.edu.cn//ubuntu/ precise-security main multiverse restricted universe
deb http://mirrors.6.tuna.tsinghua.edu.cn/ubuntu/ precise-updates main multiverse restricted universe
deb-src http://mirrors.6.tuna.tsinghua.edu.cn/ubuntu/ precise main multiverse restricted universe
deb-src http://mirrors.6.tuna.tsinghua.edu.cn/ubuntu/ precise-backports main multiverse restricted universe
deb-src http://mirrors.6.tuna.tsinghua.edu.cn/ubuntu/ precise-proposed main multiverse restricted universe
deb-src http://mirrors.6.tuna.tsinghua.edu.cn/ubuntu/ precise-security main multiverse restricted universe
deb-src http://mirrors.6.tuna.tsinghua.edu.cn/ubuntu/ precise-updates main multiverse restricted universe
deb http://mirror.bjtu.edu.cn/ubuntu/ precise main multiverse restricted universe
deb http://mirror.bjtu.edu.cn/ubuntu/ precise-backports main multiverse restricted universe
deb http://mirror.bjtu.edu.cn/ubuntu/ precise-proposed main multiverse restricted universe
deb http://mirror.bjtu.edu.cn/ubuntu/ precise-security main multiverse restricted universe
deb http://mirror.bjtu.edu.cn/ubuntu/ precise-updates main multiverse restricted universe
deb-src http://mirror.bjtu.edu.cn/ubuntu/ precise main multiverse restricted universe
deb-src http://mirror.bjtu.edu.cn/ubuntu/ precise-backports main multiverse restricted universe
deb-src http://mirror.bjtu.edu.cn/ubuntu/ precise-proposed main multiverse restricted universe
deb-src http://mirror.bjtu.edu.cn/ubuntu/ precise-security main multiverse restricted universe
deb-src http://mirror.bjtu.edu.cn/ubuntu/ precise-updates main multiverse restricted universe
deb http://mirror6.bjtu.edu.cn/ubuntu/ precise main multiverse restricted universe
deb http://mirror6.bjtu.edu.cn/ubuntu/ precise-backports main multiverse restricted universe
deb http://mirror6.bjtu.edu.cn/ubuntu/ precise-proposed main multiverse restricted universe
deb http://mirror6.bjtu.edu.cn/ubuntu/ precise-security main multiverse restricted universe
deb http://mirror6.bjtu.edu.cn/ubuntu/ precise-updates main multiverse restricted universe
deb-src http://mirror6.bjtu.edu.cn/ubuntu/ precise main multiverse restricted universe
deb-src http://mirror6.bjtu.edu.cn/ubuntu/ precise-backports main multiverse restricted universe
deb-src http://mirror6.bjtu.edu.cn/ubuntu/ precise-proposed main multiverse restricted universe
deb-src http://mirror6.bjtu.edu.cn/ubuntu/ precise-security main multiverse restricted universe
deb-src http://mirror6.bjtu.edu.cn/ubuntu/ precise-updates main multiverse restricted universe
deb http://mirror.bit.edu.cn/ubuntu/ precise main restricted universe multiverse
deb http://mirror.bit.edu.cn/ubuntu/ precise-security main restricted universe multiverse
deb http://mirror.bit.edu.cn/ubuntu/ precise-updates main restricted universe multiverse
deb http://mirror.bit.edu.cn/ubuntu/ precise-backports main restricted universe multiverse
deb http://mirror.bit.edu.cn/ubuntu/ precise-proposed main restricted universe multiverse
deb-src http://mirror.bit.edu.cn/ubuntu/ precise main restricted universe multiverse
deb-src http://mirror.bit.edu.cn/ubuntu/ precise-security main restricted universe multiverse
deb-src http://mirror.bit.edu.cn/ubuntu/ precise-updates main restricted universe multiverse
deb-src http://mirror.bit.edu.cn/ubuntu/ precise-backports main restricted universe multiverse
deb-src http://mirror.bit.edu.cn/ubuntu/ precise-proposed main restricted universe multiverse
deb http://mirror.bit6.edu.cn/ubuntu/ precise main restricted universe multiverse
deb http://mirror.bit6.edu.cn/ubuntu/ precise-security main restricted universe multiverse
deb http://mirror.bit6.edu.cn/ubuntu/ precise-updates main restricted universe multiverse
deb http://mirror.bit6.edu.cn/ubuntu/ precise-backports main restricted universe multiverse
deb http://mirror.bit6.edu.cn/ubuntu/ precise-proposed main restricted universe multiverse
deb-src http://mirror.bit6.edu.cn/ubuntu/ precise main restricted universe multiverse
deb-src http://mirror.bit6.edu.cn/ubuntu/ precise-security main restricted universe multiverse
deb-src http://mirror.bit6.edu.cn/ubuntu/ precise-updates main restricted universe multiverse
deb-src http://mirror.bit6.edu.cn/ubuntu/ precise-backports main restricted universe multiverse
deb-src http://mirror.bit6.edu.cn/ubuntu/ precise-proposed main restricted universe multiverse
deb http://mirror.tju.edu.cn/ubuntu/ oneiric main restricted universe multiverse
deb http://mirror.tju.edu.cn/ubuntu/ oneiric-security main restricted universe multiverse
deb http://mirror.tju.edu.cn/ubuntu/ oneiric-updates main restricted universe multiverse
deb http://mirror.tju.edu.cn/ubuntu/ oneiric-backports main restricted universe multiverse
deb http://mirror.tju.edu.cn/ubuntu/ oneiric-proposed main restricted universe multiverse
deb-src http://mirror.tju.edu.cn/ubuntu/ oneiric main restricted universe multiverse
deb-src http://mirror.tju.edu.cn/ubuntu/ oneiric-security main restricted universe multiverse
deb-src http://mirror.tju.edu.cn/ubuntu/ oneiric-updates main restricted universe multiverse
deb-src http://mirror.tju.edu.cn/ubuntu/ oneiric-backports main restricted universe multiverse
deb-src http://mirror.tju.edu.cn/ubuntu/ oneiric-proposed main restricted universe multiverse
deb http://mirror.qdu.edu.cn/ubuntu precise main restricted universe multiverse
deb http://mirror.qdu.edu.cn/ubuntu precise-security main restricted universe multiverse
deb http://mirror.qdu.edu.cn/ubuntu precise-updates main restricted universe multiverse
deb http://mirror.qdu.edu.cn/ubuntu precise-backports main restricted universe multiverse
deb http://mirror.qdu.edu.cn/ubuntu precise-proposed main restricted universe multiverse
deb-src http://mirror.qdu.edu.cn/ubuntu precise main restricted universe multiverse
deb-src http://mirror.qdu.edu.cn/ubuntu precise-security main restricted universe multiverse
deb-src http://mirror.qdu.edu.cn/ubuntu precise-updates main restricted universe multiverse
deb-src http://mirror.qdu.edu.cn/ubuntu precise-backports main restricted universe multiverse
deb-src http://mirror.qdu.edu.cn/ubuntu precise-proposed main restricted universe multiverse
deb http://run.hit.edu.cn/ubuntu/ precise main restricted universe multiverse
deb http://run.hit.edu.cn/ubuntu/ precise-security main restricted universe multiverse
deb http://run.hit.edu.cn/ubuntu/ precise-updates main restricted universe multiverse
deb http://run.hit.edu.cn/ubuntu/ precise-backports main restricted universe multiverse
deb http://run.hit.edu.cn/ubuntu/ precise-proposed main restricted universe multiverse
deb-src http://run.hit.edu.cn/ubuntu/ precise main restricted universe multiverse
deb-src http://run.hit.edu.cn/ubuntu/ precise-security main restricted universe multiverse
deb-src http://run.hit.edu.cn/ubuntu/ precise-updates main restricted universe multiverse
deb-src http://run.hit.edu.cn/ubuntu/ precise-backports main restricted universe multiverse
deb-src http://run.hit.edu.cn/ubuntu/ precise-proposed main restricted universe multiverse
deb http://run6.hit.edu.cn/ubuntu/ precise main restricted universe multiverse
deb http://run6.hit.edu.cn/ubuntu/ precise-security main restricted universe multiverse
deb http://run6.hit.edu.cn/ubuntu/ precise-updates main restricted universe multiverse
deb http://run6.hit.edu.cn/ubuntu/ precise-backports main restricted universe multiverse
deb http://run6.hit.edu.cn/ubuntu/ precise-proposed main restricted universe multiverse
deb-src http://run6.hit.edu.cn/ubuntu/ precise main restricted universe multiverse
deb-src http://run6.hit.edu.cn/ubuntu/ precise-security main restricted universe multiverse
deb-src http://run6.hit.edu.cn/ubuntu/ precise-updates main restricted universe multiverse
deb-src http://run6.hit.edu.cn/ubuntu/ precise-backports main restricted universe multiverse
deb-src http://run6.hit.edu.cn/ubuntu/ precise-proposed main restricted universe multiverse
deb http://ftp.sjtu.edu.cn/ubuntu/ precise main multiverse restricted universe
deb http://ftp.sjtu.edu.cn/ubuntu/ precise-backports main multiverse restricted universe
deb http://ftp.sjtu.edu.cn/ubuntu/ precise-proposed main multiverse restricted universe
deb http://ftp.sjtu.edu.cn/ubuntu/ precise-security main multiverse restricted universe
deb http://ftp.sjtu.edu.cn/ubuntu/ precise-updates main multiverse restricted universe
deb-src http://ftp.sjtu.edu.cn/ubuntu/ precise main multiverse restricted universe
deb-src http://ftp.sjtu.edu.cn/ubuntu/ precise-backports main multiverse restricted universe
deb-src http://ftp.sjtu.edu.cn/ubuntu/ precise-proposed main multiverse restricted universe
deb-src http://ftp.sjtu.edu.cn/ubuntu/ precise-security main multiverse restricted universe
deb-src http://ftp.sjtu.edu.cn/ubuntu/ precise-updates main multiverse restricted universe
deb http://ftp6.sjtu.edu.cn/ubuntu/ precise main multiverse restricted universe
deb http://ftp6.sjtu.edu.cn/ubuntu/ precise-backports main multiverse restricted universe
deb http://ftp6.sjtu.edu.cn/ubuntu/ precise-proposed main multiverse restricted universe
deb http://ftp6.sjtu.edu.cn/ubuntu/ precise-security main multiverse restricted universe
deb http://ftp6.sjtu.edu.cn/ubuntu/ precise-updates main multiverse restricted universe
deb-src http://ftp6.sjtu.edu.cn/ubuntu/ precise main multiverse restricted universe
deb-src http://ftp6.sjtu.edu.cn/ubuntu/ precise-backports main multiverse restricted universe
deb-src http://ftp6.sjtu.edu.cn/ubuntu/ precise-proposed main multiverse restricted universe
deb-src http://ftp6.sjtu.edu.cn/ubuntu/ precise-security main multiverse restricted universe
deb-src http://ftp6.sjtu.edu.cn/ubuntu/ precise-updates main multiverse restricted universe
deb http://cs3.swfu.edu.cn/ubuntu/ precise main multiverse restricted universe
deb http://cs3.swfu.edu.cn/ubuntu/ precise-backports main multiverse restricted universe
deb http://cs3.swfu.edu.cn/ubuntu/ precise-proposed main multiverse restricted universe
deb http://cs3.swfu.edu.cn/ubuntu/ precise-security main multiverse restricted universe
deb http://cs3.swfu.edu.cn/ubuntu/ precise-updates main multiverse restricted universe
deb-src http://cs3.swfu.edu.cn/ubuntu/ precise main multiverse restricted universe
deb-src http://cs3.swfu.edu.cn/ubuntu/ precise-backports main multiverse restricted universe
deb-src http://cs3.swfu.edu.cnubuntu/ precise-proposed main multiverse restricted universe
deb-src http://cs3.swfu.edu.cn/ubuntu/ precise-security main multiverse restricted universe
deb-src http://cs3.swfu.edu.cn/ubuntu/ precise-updates main multiverse restricted universe
deb http://mirror.lzu.edu.cn/ubuntu/ precise main multiverse restricted universe
deb http://mirror.lzu.edu.cn/ubuntu/ precise-backports main multiverse restricted universe
deb http://mirror.lzu.edu.cn/ubuntu/ precise-proposed main multiverse restricted universe
deb http://mirror.lzu.edu.cn/ubuntu/ precise-security main multiverse restricted universe
deb http://mirror.lzu.edu.cn/ubuntu/ precise-updates main multiverse restricted universe
deb-src http://mirror.lzu.edu.cn/ubuntu/ precise main multiverse restricted universe
deb-src http://mirror.lzu.edu.cn/ubuntu/ precise-backports main multiverse restricted universe
deb-src http://mirror.lzu.edu.cn/ubuntu/ precise-proposed main multiverse restricted universe
deb-src http://mirror.lzu.edu.cn/ubuntu/ precise-security main multiverse restricted universe
deb-src http://mirror.lzu.edu.cn/ubuntu/ precise-updates main multiverse restricted universe
deb http://tw.archive.ubuntu.com/ubuntu precise main restricted universe multiverse
deb http://tw.archive.ubuntu.com/ubuntu precise-security main restricted universe multiverse
deb http://tw.archive.ubuntu.com/ubuntu precise-updates main restricted universe multiverse
deb http://tw.archive.ubuntu.com/ubuntu precise-backports main restricted universe multiverse
deb http://tw.archive.ubuntu.com/ubuntu precise-proposed main restricted universe multiverse
deb-src http://tw.archive.ubuntu.com/ubuntu precise main restricted universe multiverse
deb-src http://tw.archive.ubuntu.com/ubuntu precise-security main restricted universe multiverse
deb-src http://tw.archive.ubuntu.com/ubuntu precise-updates main restricted universe multiverse
deb-src http://tw.archive.ubuntu.com/ubuntu precise-backports main restricted universe multiverse
deb-src http://tw.archive.ubuntu.com/ubuntu precise-proposed main restricted universe multiverse