Ubuntu 14.04 apt源更新
# 14.04 下进 my /etc/apt/sources.list /etc/apt/sources.bak vi /etc/apt/sources.list
从以下源中选择一个
源列表 Trusty(14.04)版本 Ubuntu 官方更新服务器（欧洲，此为官方源，国内较慢，但无同步延迟问题，电信、移动/铁通、联通等公网用户可以使用)： deb http://archive.ubuntu.com/ubuntu/ trusty main restricted universe multiverse deb http://archive.ubuntu.com/ubuntu/ trusty-security main restricted universe multiverse deb http://archive.ubuntu.com/ubuntu/ trusty-updates main restricted universe multiverse deb http://archive.ubuntu.com/ubuntu/ trusty-proposed main restricted universe multiverse deb http://archive.ubuntu.com/ubuntu/ trusty-backports main restricted universe multiverse deb-src http://archive.ubuntu.com/ubuntu/ trusty main restricted universe multiverse deb-src http://archive.ubuntu.com/ubuntu/ trusty-security main restricted universe multiverse deb-src http://archive.ubuntu.com/ubuntu/ trusty-updates main restricted universe multiverse deb-src http://archive.ubuntu.com/ubuntu/ trusty-proposed main restricted universe multiverse deb-src http://archive.ubuntu.com/ubuntu/ trusty-backports main restricted universe multiverse Ubuntu官方提供的其他软件（第三方闭源软件等）： deb http://archive.canonical.com/ubuntu/ trusty partner deb http://extras.ubuntu.com/ubuntu/ trusty main 网易163更新服务器（广东广州电信/联通千兆双线接入），包含其他开源镜像： deb http://mirrors.163.com/ubuntu/ trusty main restricted universe multiverse deb http://mirrors.163.com/ubuntu/ trusty-security main restricted universe multiverse deb http://mirrors.163.com/ubuntu/ trusty-updates main restricted universe multiverse deb http://mirrors.163.com/ubuntu/ trusty-proposed main restricted universe multiverse deb http://mirrors.163.com/ubuntu/ trusty-backports main restricted universe multiverse deb-src http://mirrors.163.com/ubuntu/ trusty main restricted universe multiverse deb-src http://mirrors.163.com/ubuntu/ trusty-security main restricted universe multiverse deb-src http://mirrors.163.com/ubuntu/ trusty-updates main restricted universe multiverse deb-src http://mirrors.163.com/ubuntu/ trusty-proposed main restricted universe multiverse deb-src http://mirrors.163.com/ubuntu/ trusty-backports main restricted universe multiverse 搜狐更新服务器（山东联通千兆接入，官方中国大陆地区镜像跳转至此） ，包含其他开源镜像： deb http://mirrors.sohu.com/ubuntu/ trusty main restricted universe multiverse deb http://mirrors.sohu.com/ubuntu/ trusty-security main restricted universe multiverse deb http://mirrors.sohu.com/ubuntu/ trusty-updates main restricted universe multiverse deb http://mirrors.sohu.com/ubuntu/ trusty-proposed main restricted universe multiverse deb http://mirrors.sohu.com/ubuntu/ trusty-backports main restricted universe multiverse deb-src http://mirrors.sohu.com/ubuntu/ trusty main restricted universe multiverse deb-src http://mirrors.sohu.com/ubuntu/ trusty-security main restricted universe multiverse deb-src http://mirrors.sohu.com/ubuntu/ trusty-updates main restricted universe multiverse deb-src http://mirrors.sohu.com/ubuntu/ trusty-proposed main restricted universe multiverse deb-src http://mirrors.sohu.com/ubuntu/ trusty-backports main restricted universe multiverse LupaWorld 更新服务器（浙江杭州电信/联通双线服务器），包含其他开源镜像： deb http://mirror.lupaworld.com/ubuntu trusty main restricted universe multiverse deb http://mirror.lupaworld.com/ubuntu trusty-security main restricted universe multiverse deb http://mirror.lupaworld.com/ubuntu trusty-updates main restricted universe multiverse deb http://mirror.lupaworld.com/ubuntu trusty-backports main restricted universe multiverse deb http://mirror.lupaworld.com/ubuntu trusty-proposed main restricted universe multiverse deb-src http://mirror.lupaworld.com/ubuntu trusty main restricted universe multiverse deb-src http://mirror.lupaworld.com/ubuntu trusty-security main restricted universe multiverse deb-src http://mirror.lupaworld.com/ubuntu trusty-updates main restricted universe multiverse deb-src http://mirror.lupaworld.com/ubuntu trusty-backports main restricted universe multiverse deb-src http://mirror.lupaworld.com/ubuntu trusty-proposed main restricted universe multiverse 常州贝特康姆软件技术有限公司 更新服务器（江苏常州电信服务器），包含其他开源镜像。 ( CN99域名 系 “常州市亚科技术有限公司” 所注册，但此公司与常州贝特康姆的法人代表和营业地址相同。所以本镜像实际即原 CN99。但现在 CN99镜像的域名已改为跳转至网易镜像）: deb http://centos.bitcomm.cn/ubuntu trusty main restricted universe multiverse deb http://centos.bitcomm.cn/ubuntu trusty-security main restricted universe multiverse deb http://centos.bitcomm.cn/ubuntu trusty-updates main restricted universe multiverse deb http://centos.bitcomm.cn/ubuntu trusty-backports main restricted universe multiverse deb http://centos.bitcomm.cn/ubuntu trusty-proposed main restricted universe multiverse deb-src http://centos.bitcomm.cn/ubuntu trusty main restricted universe multiverse deb-src http://centos.bitcomm.cn/ubuntu trusty-security main restricted universe multiverse deb-src http://centos.bitcomm.cn/ubuntu trusty-updates main restricted universe multiverse deb-src http://centos.bitcomm.cn/ubuntu trusty-backports main restricted universe multiverse deb-src http://centos.bitcomm.cn/ubuntu trusty-proposed main restricted universe multiverse 以下为有教育网接入的服务器（推荐教育网用户使用，部分非教育网用户也有可观的速度。教育网用户请优先使用IPv6地址。 中国科学技术大学更新服务器（位于合肥，千兆教育网接入，百兆电信/联通线路智能路由），由中科大Linux 用户协会和中科大学网络信息中心维护，包含其他开源镜像，Deepin 官方服务器 实际亦指向此处： deb http://debian.ustc.edu.cn/ubuntu/ trusty main multiverse restricted universe deb http://debian.ustc.edu.cn/ubuntu/ trusty-backports main multiverse restricted universe deb http://debian.ustc.edu.cn/ubuntu/ trusty-proposed main multiverse restricted universe deb http://debian.ustc.edu.cn/ubuntu/ trusty-security main multiverse restricted universe deb http://debian.ustc.edu.cn/ubuntu/ trusty-updates main multiverse restricted universe deb-src http://debian.ustc.edu.cn/ubuntu/ trusty main multiverse restricted universe deb-src http://debian.ustc.edu.cn/ubuntu/ trusty-backports main multiverse restricted universe deb-src http://debian.ustc.edu.cn/ubuntu/ trusty-proposed main multiverse restricted universe deb-src http://debian.ustc.edu.cn/ubuntu/ trusty-security main multiverse restricted universe deb-src http://debian.ustc.edu.cn/ubuntu/ trusty-updates main multiverse restricted universe IPv6-Only 地址 deb http://mirrors6.ustc.edu.cn/ubuntu/ trusty main multiverse restricted universe deb http://mirrors6.ustc.edu.cn/ubuntu/ trusty-backports main multiverse restricted universe deb http://mirrors6.ustc.edu.cn/ubuntu/ trusty-proposed main multiverse restricted universe deb http://mirrors6.ustc.edu.cn/ubuntu/ trusty-security main multiverse restricted universe deb http://mirrors6.ustc.edu.cn/ubuntu/ trusty-updates main multiverse restricted universe deb-src http://mirrors6.ustc.edu.cn/ubuntu/ trusty main multiverse restricted universe deb-src http://mirrors6.ustc.edu.cn/ubuntu/ trusty-backports main multiverse restricted universe deb-src http://mirrors6.ustc.edu.cn/ubuntu/ trusty-proposed main multiverse restricted universe deb-src http://mirrors6.ustc.edu.cn/ubuntu/ trusty-security main multiverse restricted universe deb-src http://mirrors6.ustc.edu.cn/ubuntu/ trusty-updates main multiverse restricted universe 清华大学更新服务器，（教育网核心节点百兆接入，已计划提高到千兆）由清华大学学生网管会维护。包含其他开源镜像： deb http://mirrors.tuna.tsinghua.edu.cn/ubuntu/ trusty main restricted universe multiverse deb http://mirrors.tuna.tsinghua.edu.cn/ubuntu/ trusty-security main restricted universe multiverse deb http://mirrors.tuna.tsinghua.edu.cn/ubuntu/ trusty-updates main restricted universe multiverse deb http://mirrors.tuna.tsinghua.edu.cn/ubuntu/ trusty-backports main restricted universe multiverse deb http://mirrors.tuna.tsinghua.edu.cn/ubuntu/ trusty-proposed main restricted universe multiverse deb-src http://mirrors.tuna.tsinghua.edu.cn/ubuntu/ trusty main restricted universe multiverse deb-src http://mirrors.tuna.tsinghua.edu.cn/ubuntu/ trusty-security main restricted universe multiverse deb-src http://mirrors.tuna.tsinghua.edu.cn/ubuntu/ trusty-updates main restricted universe multiverse deb-src http://mirrors.tuna.tsinghua.edu.cn/ubuntu/ trusty-backports main restricted universe multiverse deb-src http://mirrors.tuna.tsinghua.edu.cn/ubuntu/ trusty-proposed main restricted universe multiverse IPv4-Only 地址 deb http://mirrors.4.tuna.tsinghua.edu.cn/ubuntu/ trusty main restricted universe multiverse deb http://mirrors.4.tuna.tsinghua.edu.cn/ubuntu/ trusty-security main restricted universe multiverse deb http://mirrors.4.tuna.tsinghua.edu.cn/ubuntu/ trusty-updates main restricted universe multiverse deb http://mirrors.4.tuna.tsinghua.edu.cn/ubuntu/ trusty-backports main restricted universe multiverse deb http://mirrors.4.tuna.tsinghua.edu.cn/ubuntu/ trusty-proposed main restricted universe multiverse deb-src http://mirrors.4.tuna.tsinghua.edu.cn/ubuntu/ trusty main restricted universe multiverse deb-src http://mirrors.4.tuna.tsinghua.edu.cn/ubuntu/ trusty-security main restricted universe multiverse deb-src http://mirrors.4.tuna.tsinghua.edu.cn/ubuntu/ trusty-updates main restricted universe multiverse deb-src http://mirrors.4.tuna.tsinghua.edu.cn/ubuntu/ trusty-backports main restricted universe multiverse deb-src http://mirrors.4.tuna.tsinghua.edu.cn/ubuntu/ trusty-proposed main restricted universe multiverse IPv6-Only 地址 deb http://mirrors.6.tuna.tsinghua.edu.cn/ubuntu/ trusty main multiverse restricted universe deb http://mirrors.6.tuna.tsinghua.edu.cn/ubuntu/ trusty-backports main multiverse restricted universe deb http://mirrors.6.tuna.tsinghua.edu.cn/ubuntu/ trusty-proposed main multiverse restricted universe deb http://mirrors.6.tuna.tsinghua.edu.cn//ubuntu/ trusty-security main multiverse restricted universe deb http://mirrors.6.tuna.tsinghua.edu.cn/ubuntu/ trusty-updates main multiverse restricted universe deb-src http://mirrors.6.tuna.tsinghua.edu.cn/ubuntu/ trusty main multiverse restricted universe deb-src http://mirrors.6.tuna.tsinghua.edu.cn/ubuntu/ trusty-backports main multiverse restricted universe deb-src http://mirrors.6.tuna.tsinghua.edu.cn/ubuntu/ trusty-proposed main multiverse restricted universe deb-src http://mirrors.6.tuna.tsinghua.edu.cn/ubuntu/ trusty-security main multiverse restricted universe deb-src http://mirrors.6.tuna.tsinghua.edu.cn/ubuntu/ trusty-updates main multiverse restricted universe 北京交通大学更新服务器（教育网/电信百兆接入），由北京交通大学信息中心赞助，包含其他开源镜像。 （域名中的 bjtu 可以替换为 njtu ，即北交旧名“北方交通大学”对应域名） ： deb http://mirror.bjtu.edu.cn/ubuntu/ trusty main multiverse restricted universe deb http://mirror.bjtu.edu.cn/ubuntu/ trusty-backports main multiverse restricted universe deb http://mirror.bjtu.edu.cn/ubuntu/ trusty-proposed main multiverse restricted universe deb http://mirror.bjtu.edu.cn/ubuntu/ trusty-security main multiverse restricted universe deb http://mirror.bjtu.edu.cn/ubuntu/ trusty-updates main multiverse restricted universe deb-src http://mirror.bjtu.edu.cn/ubuntu/ trusty main multiverse restricted universe deb-src http://mirror.bjtu.edu.cn/ubuntu/ trusty-backports main multiverse restricted universe deb-src http://mirror.bjtu.edu.cn/ubuntu/ trusty-proposed main multiverse restricted universe deb-src http://mirror.bjtu.edu.cn/ubuntu/ trusty-security main multiverse restricted universe deb-src http://mirror.bjtu.edu.cn/ubuntu/ trusty-updates main multiverse restricted universe IPv6-Only 地址 deb http://mirror6.bjtu.edu.cn/ubuntu/ trusty main multiverse restricted universe deb http://mirror6.bjtu.edu.cn/ubuntu/ trusty-backports main multiverse restricted universe deb http://mirror6.bjtu.edu.cn/ubuntu/ trusty-proposed main multiverse restricted universe deb http://mirror6.bjtu.edu.cn/ubuntu/ trusty-security main multiverse restricted universe deb http://mirror6.bjtu.edu.cn/ubuntu/ trusty-updates main multiverse restricted universe deb-src http://mirror6.bjtu.edu.cn/ubuntu/ trusty main multiverse restricted universe deb-src http://mirror6.bjtu.edu.cn/ubuntu/ trusty-backports main multiverse restricted universe deb-src http://mirror6.bjtu.edu.cn/ubuntu/ trusty-proposed main multiverse restricted universe deb-src http://mirror6.bjtu.edu.cn/ubuntu/ trusty-security main multiverse restricted universe deb-src http://mirror6.bjtu.edu.cn/ubuntu/ trusty-updates main multiverse restricted universe 北京理工大学更新服务器（仅教育网可以访问），包含其他开源镜像： deb http://mirror.bit.edu.cn/ubuntu/ trusty main restricted universe multiverse deb http://mirror.bit.edu.cn/ubuntu/ trusty-security main restricted universe multiverse deb http://mirror.bit.edu.cn/ubuntu/ trusty-updates main restricted universe multiverse deb http://mirror.bit.edu.cn/ubuntu/ trusty-backports main restricted universe multiverse deb http://mirror.bit.edu.cn/ubuntu/ trusty-proposed main restricted universe multiverse deb-src http://mirror.bit.edu.cn/ubuntu/ trusty main restricted universe multiverse deb-src http://mirror.bit.edu.cn/ubuntu/ trusty-security main restricted universe multiverse deb-src http://mirror.bit.edu.cn/ubuntu/ trusty-updates main restricted universe multiverse deb-src http://mirror.bit.edu.cn/ubuntu/ trusty-backports main restricted universe multiverse deb-src http://mirror.bit.edu.cn/ubuntu/ trusty-proposed main restricted universe multiverse IPv6-Only 地址 deb http://mirror.bit6.edu.cn/ubuntu/ trusty main restricted universe multiverse deb http://mirror.bit6.edu.cn/ubuntu/ trusty-security main restricted universe multiverse deb http://mirror.bit6.edu.cn/ubuntu/ trusty-updates main restricted universe multiverse deb http://mirror.bit6.edu.cn/ubuntu/ trusty-backports main restricted universe multiverse deb http://mirror.bit6.edu.cn/ubuntu/ trusty-proposed main restricted universe multiverse deb-src http://mirror.bit6.edu.cn/ubuntu/ trusty main restricted universe multiverse deb-src http://mirror.bit6.edu.cn/ubuntu/ trusty-security main restricted universe multiverse deb-src http://mirror.bit6.edu.cn/ubuntu/ trusty-updates main restricted universe multiverse deb-src http://mirror.bit6.edu.cn/ubuntu/ trusty-backports main restricted universe multiverse deb-src http://mirror.bit6.edu.cn/ubuntu/ trusty-proposed main restricted universe multiverse 天津大学更新服务器，由天津大学信息与网络协会和天津大学自由软件联盟维护，包含其他开源镜像 (校外限 IPv6 访问) （域名可以替换为 jx.tju.zyrj.org 或 jx6.tju.zyrj.org） deb http://mirror.tju.edu.cn/ubuntu/ trusty main restricted universe multiverse deb http://mirror.tju.edu.cn/ubuntu/ trusty-security main restricted universe multiverse deb http://mirror.tju.edu.cn/ubuntu/ trusty-updates main restricted universe multiverse deb http://mirror.tju.edu.cn/ubuntu/ trusty-backports main restricted universe multiverse deb http://mirror.tju.edu.cn/ubuntu/ trusty-proposed main restricted universe multiverse deb-src http://mirror.tju.edu.cn/ubuntu/ trusty main restricted universe multiverse deb-src http://mirror.tju.edu.cn/ubuntu/ trusty-security main restricted universe multiverse deb-src http://mirror.tju.edu.cn/ubuntu/ trusty-updates main restricted universe multiverse deb-src http://mirror.tju.edu.cn/ubuntu/ trusty-backports main restricted universe multiverse deb-src http://mirror.tju.edu.cn/ubuntu/ trusty-proposed main restricted universe multiverse 青岛大学更新服务器（教育网/山东青岛移动专线双线服务器），由 OSQDU维护，位于青岛大学。包含开源镜像和Opera、马克思主义文库等其他镜像。： deb http://mirror.qdu.edu.cn/ubuntu trusty main restricted universe multiverse deb http://mirror.qdu.edu.cn/ubuntu trusty-security main restricted universe multiverse deb http://mirror.qdu.edu.cn/ubuntu trusty-updates main restricted universe multiverse deb http://mirror.qdu.edu.cn/ubuntu trusty-backports main restricted universe multiverse deb http://mirror.qdu.edu.cn/ubuntu trusty-proposed main restricted universe multiverse deb-src http://mirror.qdu.edu.cn/ubuntu trusty main restricted universe multiverse deb-src http://mirror.qdu.edu.cn/ubuntu trusty-security main restricted universe multiverse deb-src http://mirror.qdu.edu.cn/ubuntu trusty-updates main restricted universe multiverse deb-src http://mirror.qdu.edu.cn/ubuntu trusty-backports main restricted universe multiverse deb-src http://mirror.qdu.edu.cn/ubuntu trusty-proposed main restricted universe multiverse 东北大学更新服务器，包含其他开源镜像： deb http://ftp.neu.edu.cn/mirrors/ubuntu/ trusty main multiverse restricted universe deb http://ftp.neu.edu.cn/mirrors/ubuntu/ trusty-backports main multiverse restricted universe deb http://ftp.neu.edu.cn/mirrors/ubuntu/ trusty-proposed main multiverse restricted universe deb http://ftp.neu.edu.cn/mirrors/ubuntu/ trusty-security main multiverse restricted universe deb http://ftp.neu.edu.cn/mirrors/ubuntu/ trusty-updates main multiverse restricted universe deb-src http://ftp.neu.edu.cn/mirrors/ubuntu/ trusty main multiverse restricted universe deb-src http://ftp.neu.edu.cn/mirrors/ubuntu/ trusty-backports main multiverse restricted universe deb-src http://ftp.neu.edu.cn/mirrors/ubuntu/ trusty-proposed main multiverse restricted universe deb-src http://ftp.neu.edu.cn/mirrors/ubuntu/ trusty-security main multiverse restricted universe deb-src http://ftp.neu.edu.cn/mirrors/ubuntu/ trusty-updates main multiverse restricted universe IPv6-Only 地址 deb http://ftp.neu6.edu.cn/mirrors/ trusty main multiverse restricted universe deb http://ftp.neu6.edu.cn/mirrors/ trusty-backports main multiverse restricted universe deb http://ftp.neu6.edu.cn/mirrors/ trusty-proposed main multiverse restricted universe deb http://ftp.neu6.edu.cn/mirrors/ trusty-security main multiverse restricted universe deb http://ftp.neu6.edu.cn/mirrors/ trusty-updates main multiverse restricted universe deb-src http://ftp.neu6.edu.cn/mirrors/ trusty main multiverse restricted universe deb-src http://ftp.neu6.edu.cn/mirrors/ trusty-backports main multiverse restricted universe deb-src http://ftp.neu6.edu.cn/mirrors/ trusty-proposed main multiverse restricted universe deb-src http://ftp.neu6.edu.cn/mirrors/ trusty-security main multiverse restricted universe deb-src http://ftp.neu6.edu.cn/mirrors/ trusty-updates main multiverse restricted universe 哈尔滨工业大学更新服务器，包含其他开源镜像： deb http://run.hit.edu.cn/ubuntu/ trusty main restricted universe multiverse deb http://run.hit.edu.cn/ubuntu/ trusty-security main restricted universe multiverse deb http://run.hit.edu.cn/ubuntu/ trusty-updates main restricted universe multiverse deb http://run.hit.edu.cn/ubuntu/ trusty-backports main restricted universe multiverse deb http://run.hit.edu.cn/ubuntu/ trusty-proposed main restricted universe multiverse deb-src http://run.hit.edu.cn/ubuntu/ trusty main restricted universe multiverse deb-src http://run.hit.edu.cn/ubuntu/ trusty-security main restricted universe multiverse deb-src http://run.hit.edu.cn/ubuntu/ trusty-updates main restricted universe multiverse deb-src http://run.hit.edu.cn/ubuntu/ trusty-backports main restricted universe multiverse deb-src http://run.hit.edu.cn/ubuntu/ trusty-proposed main restricted universe multiverse IPv6-Only地址 deb http://run6.hit.edu.cn/ubuntu/ trusty main restricted universe multiverse deb http://run6.hit.edu.cn/ubuntu/ trusty-security main restricted universe multiverse deb http://run6.hit.edu.cn/ubuntu/ trusty-updates main restricted universe multiverse deb http://run6.hit.edu.cn/ubuntu/ trusty-backports main restricted universe multiverse deb http://run6.hit.edu.cn/ubuntu/ trusty-proposed main restricted universe multiverse deb-src http://run6.hit.edu.cn/ubuntu/ trusty main restricted universe multiverse deb-src http://run6.hit.edu.cn/ubuntu/ trusty-security main restricted universe multiverse deb-src http://run6.hit.edu.cn/ubuntu/ trusty-updates main restricted universe multiverse deb-src http://run6.hit.edu.cn/ubuntu/ trusty-backports main restricted universe multiverse deb-src http://run6.hit.edu.cn/ubuntu/ trusty-proposed main restricted universe multiverse 大连理工大学更新服务器，包含其他开源镜像： ( IPv4/v6 Both ) deb http://mirror.dlut.edu.cn/ubuntu/ trusty main restricted universe multiverse deb http://mirror.dlut.edu.cn/ubuntu/ trusty-security main restricted universe multiverse deb http://mirror.dlut.edu.cn/ubuntu/ trusty-updates main restricted universe multiverse deb http://mirror.dlut.edu.cn/ubuntu/ubuntu trusty-backports main restricted universe multiverse deb http://mirror.dlut.edu.cn/ubuntu/ trusty-proposed main restricted universe multiverse deb-src http://mirror.dlut.edu.cn/ubuntu/ trusty main restricted universe multiverse deb-src http://mirror.dlut.edu.cn/ubuntu/ trusty-security main restricted universe multiverse deb-src http://mirror.dlut.edu.cn/ubuntu/ trusty-updates main restricted universe multiverse deb-src http://mirror.dlut.edu.cn/ubuntu/ trusty-backports main restricted universe multiverse deb-src http://mirror.dlut.edu.cn/ubuntu/ trusty-proposed main restricted universe multiverse 上海交通大学更新服务器（教育网千兆接入，联通/电信线路情况不详），包含其他开源镜像： deb http://ftp.sjtu.edu.cn/ubuntu/ trusty main multiverse restricted universe deb http://ftp.sjtu.edu.cn/ubuntu/ trusty-backports main multiverse restricted universe deb http://ftp.sjtu.edu.cn/ubuntu/ trusty-proposed main multiverse restricted universe deb http://ftp.sjtu.edu.cn/ubuntu/ trusty-security main multiverse restricted universe deb http://ftp.sjtu.edu.cn/ubuntu/ trusty-updates main multiverse restricted universe deb-src http://ftp.sjtu.edu.cn/ubuntu/ trusty main multiverse restricted universe deb-src http://ftp.sjtu.edu.cn/ubuntu/ trusty-backports main multiverse restricted universe deb-src http://ftp.sjtu.edu.cn/ubuntu/ trusty-proposed main multiverse restricted universe deb-src http://ftp.sjtu.edu.cn/ubuntu/ trusty-security main multiverse restricted universe deb-src http://ftp.sjtu.edu.cn/ubuntu/ trusty-updates main multiverse restricted universe IPv6-Only 地址 deb http://ftp6.sjtu.edu.cn/ubuntu/ trusty main multiverse restricted universe deb http://ftp6.sjtu.edu.cn/ubuntu/ trusty-backports main multiverse restricted universe deb http://ftp6.sjtu.edu.cn/ubuntu/ trusty-proposed main multiverse restricted universe deb http://ftp6.sjtu.edu.cn/ubuntu/ trusty-security main multiverse restricted universe deb http://ftp6.sjtu.edu.cn/ubuntu/ trusty-updates main multiverse restricted universe deb-src http://ftp6.sjtu.edu.cn/ubuntu/ trusty main multiverse restricted universe deb-src http://ftp6.sjtu.edu.cn/ubuntu/ trusty-backports main multiverse restricted universe deb-src http://ftp6.sjtu.edu.cn/ubuntu/ trusty-proposed main multiverse restricted universe deb-src http://ftp6.sjtu.edu.cn/ubuntu/ trusty-security main multiverse restricted universe deb-src http://ftp6.sjtu.edu.cn/ubuntu/ trusty-updates main multiverse restricted universe 厦门大学更新服务器，由厦门大学信息与网络中心维护，包含其他开源镜像： ( IPv4/v6 Both ) deb http://mirrors.xmu.edu.cn/ubuntu/archive/ trusty main restricted universe multiverse deb http://mirrors.xmu.edu.cn/ubuntu/archive/ trusty-backports restricted universe multiverse deb http://mirrors.xmu.edu.cn/ubuntu/archive/ trusty-proposed main restricted universe multiverse deb http://mirrors.xmu.edu.cn/ubuntu/archive/ trusty-security main restricted universe multiverse deb http://mirrors.xmu.edu.cn/ubuntu/archive/ trusty-updates main restricted universe multiverse deb-src http://mirrors.xmu.edu.cn/ubuntu/archive/ trusty main restricted universe multiverse deb-src http://mirrors.xmu.edu.cn/ubuntu/archive/ trusty-backports main restricted universe multiverse deb-src http://mirrors.xmu.edu.cn/ubuntu/archive/ trusty-proposed main restricted universe multiverse deb-src http://mirrors.xmu.edu.cn/ubuntu/archive/ trusty-security main restricted universe multiverse deb-src http://mirrors.xmu.edu.cn/ubuntu/archive/ trusty-updates main restricted universe multiverse 成都市电子科技大学更新服务器，由电子科大学生宿舍网管会维护。仅包括 Ubuntu 镜像： ( IPv4-Only ) （如下列地址不通，可换用 uestc.edu.cn 域名尝试） deb http://ubuntu.dormforce.net/ubuntu/ trusty main multiverse restricted universe deb http://ubuntu.dormforce.net/ubuntu/ trusty-backports main multiverse restricted universe deb http://ubuntu.dormforce.net/ubuntu/ trusty-proposed main multiverse restricted universe deb http://ubuntu.dormforce.net/ubuntu/ trusty-security main multiverse restricted universe deb http://ubuntu.dormforce.net/ubuntu/ trusty-updates main multiverse restricted universe deb-src http://ubuntu.dormforce.net/ubuntu/ trusty main multiverse restricted universe deb-src http://ubuntu.dormforce.net/ubuntu/ trusty-backports main multiverse restricted universe deb-src http://ubuntu.dormforce.net/ubuntu/ trusty-proposed main multiverse restricted universe deb-src http://ubuntu.dormforce.net/ubuntu/ trusty-security main multiverse restricted universe deb-src http://ubuntu.dormforce.net/ubuntu/ trusty-updates main multiverse restricted universe 兰州大学更新服务器，由兰大开源社区维护，包含其他开源镜像： deb http://mirror.lzu.edu.cn/ubuntu/ trusty main multiverse restricted universe deb http://mirror.lzu.edu.cn/ubuntu/ trusty-backports main multiverse restricted universe deb http://mirror.lzu.edu.cn/ubuntu/ trusty-proposed main multiverse restricted universe deb http://mirror.lzu.edu.cn/ubuntu/ trusty-security main multiverse restricted universe deb http://mirror.lzu.edu.cn/ubuntu/ trusty-updates main multiverse restricted universe deb-src http://mirror.lzu.edu.cn/ubuntu/ trusty main multiverse restricted universe deb-src http://mirror.lzu.edu.cn/ubuntu/ trusty-backports main multiverse restricted universe deb-src http://mirror.lzu.edu.cn/ubuntu/ trusty-proposed main multiverse restricted universe deb-src http://mirror.lzu.edu.cn/ubuntu/ trusty-security main multiverse restricted universe deb-src http://mirror.lzu.edu.cn/ubuntu/ trusty-updates main multiverse restricted universe 以下为大陆地区外的源 香港中文大学更新服务器，由香港中文大学资讯科技服务处维护，包含其他开源镜像： deb http://ftp.cuhk.edu.hk/pub/Linux/ubuntu trusty main restricted universe multiverse deb http://ftp.cuhk.edu.hk/pub/Linux/ubuntu trusty-security main restricted universe multiverse deb http://ftp.cuhk.edu.hk/pub/Linux/ubuntu trusty-updates main restricted universe multiverse deb http://ftp.cuhk.edu.hk/pub/Linux/ubuntu trusty-backports main restricted universe multiverse deb http://ftp.cuhk.edu.hk/pub/Linux/ubuntu trusty-proposed main restricted universe multiverse deb-src http://ftp.cuhk.edu.hk/pub/Linux/ubuntu trusty main restricted universe multiverse deb-src http://ftp.cuhk.edu.hk/pub/Linux/ubuntu trusty-security main restricted universe multiverse deb-src http://ftp.cuhk.edu.hk/pub/Linux/ubuntu trusty-updates main restricted universe multiverse deb-src http://ftp.cuhk.edu.hk/pub/Linux/ubuntu trusty-backports main restricted universe multiverse deb-src http://ftp.cuhk.edu.hk/pub/Linux/ubuntu trusty-proposed main restricted universe 台湾的官方源。速度有时甚至快于内地的，包含 Debian 等其他镜像： deb http://tw.archive.ubuntu.com/ubuntu trusty main restricted universe multiverse deb http://tw.archive.ubuntu.com/ubuntu trusty-security main restricted universe multiverse deb http://tw.archive.ubuntu.com/ubuntu trusty-updates main restricted universe multiverse deb http://tw.archive.ubuntu.com/ubuntu trusty-backports main restricted universe multiverse deb http://tw.archive.ubuntu.com/ubuntu trusty-proposed main restricted universe multiverse deb-src http://tw.archive.ubuntu.com/ubuntu trusty main restricted universe multiverse deb-src http://tw.archive.ubuntu.com/ubuntu trusty-security main restricted universe multiverse deb-src http://tw.archive.ubuntu.com/ubuntu trusty-updates main restricted universe multiverse deb-src http://tw.archive.ubuntu.com/ubuntu trusty-backports main restricted universe multiverse deb-src http://tw.archive.ubuntu.com/ubuntu trusty-proposed main restricted universe multiverse
接下来执行 sudo apt-get update
执行刷新
