ubuntu更新源(ubuntu更新源出现dists)
ubuntu16.04怎么更新apt源
下面是更换步骤：
1 备份原来的更新源
cp /etc/apt/sources.list /etc/apt/sources.list.backup
如果提示权限不够就输入下面两行，先进入到超级用户，再备份
sudo -s
cp /etc/apt/sources.list /etc/apt/sources.list.backup
2 修改更新源
打开sources.list (这就是存放更新源的文件)
gedit /etc/apt/sources.list
将下面所有内容复制，粘贴并覆盖sources.list文件中的所有内容
ubuntu 系统更新源设置是什么意思
系统更新源指的是你的更新的源头，无论你使用APT工具还是dpkg、rpm等，他们都有一个文件，里面存放了可以下载到软件的“更新源”，就是那些软件的下载网址。这个文件是/etc/apt/sources.list。
如何给ubuntu更改最快的更新源
方法/步骤
打开设置》》软件和更新，
下载自：下拉菜单，选择其他站点
你可以选择最佳服务器，也可以指定你满意的服务器。
选择之后要求输入密码
选择关闭，之后会重新自动执行更新命令（sudo apt-get update）
更新完成
如何更新ubuntu的数据源文件
1 更新方法
1）用root用户登入，没有root用户密码？先建一个吧：
〉〉〉sudo passwd root
〉〉〉su
〉〉〉输入密码：..
〉〉〉cd /etc/apt
2）更新源文件
〉〉〉cp sources.list sources.list.bak #备份旧源
〉〉〉sudo gedit sources.list
2 将下文的源粘贴进去
注意：下文的6个数据源挑选一个即可，粘贴多个！！
存盘后，用更新指令：
〉〉〉apt-get update
以后就可以用了
ubuntu12.04怎么改变更新源
1 、首先备份 Ubuntu12.04 源列表
sudo cp /etc/apt/sources.list /etc/apt/sources.list.backup （备份下当前的源列表）
2 、修改更新源
sudo gedit /etc/apt/sources.list （打开 Ubuntu 12.04 源列表文件）
3 、把里面的列表替换成下面的列表
163 源
deb precise main restricted
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deb precise-security multiverse
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sohu 源
deb precise main restricted
deb-src precise main restricted
deb precise-updates main restricted
deb-src precise-updates main restricted
deb precise universe
deb-src precise universe
deb precise-updates universe
deb-src precise-updates universe
deb precise multiverse
deb-src precise multiverse
deb precise-updates multiverse
deb-src precise-updates multiverse
deb precise-backports main restricted universe multiverse
deb-src precise-backports main restricted universe multiverse
deb precise-security main restricted
deb-src precise-security main restricted
deb precise-security universe
deb-src precise-security universe
deb precise-security multiverse
deb-src precise-security multiverse
deb precise main
deb-src precise main
ubuntu.cn99.com 源（推荐） :
deb precise main restricted universe multiverse
deb precise-updates main restricted universe multiverse
deb precise-security main restricted universe multiverse
deb precise-backports main restricted universe multiverse
deb precise main restricted universe multiverse
教育网源
如果你是在校大学生，可以使用校园网 / 教育网，就是用教育网的资源吧，尤其是支持 ipv6 的，那更新速度就按兆算了。
# 电子科技大学
deb precise main restricted universe multiverse
deb precise-backports main restricted universe multiverse
deb precise-proposed main restricted universe multiverse
deb precise-security main restricted universe multiverse
deb precise-updates main restricted universe multiverse
deb-src precise main restricted universe multiverse
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deb-src precise-proposed main restricted universe multiverse
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# 中国科技大学
deb precise main restricted universe multiverse
deb precise-backports restricted universe multiverse
deb precise-proposed main restricted universe multiverse
deb precise-security main restricted universe multiverse
deb precise-updates main restricted universe multiverse
deb-src precise main restricted universe multiverse
deb-src precise-backports main restricted universe multiverse
deb-src precise-proposed main restricted universe multiverse
deb-src precise-security main restricted universe multiverse
deb-src precise-updates main restricted universe multiverse
# 北京理工大学
deb precise main multiverse restricted universe
deb precise-backports main multiverse restricted universe
deb precise-proposed main multiverse restricted universe
deb precise-security main multiverse restricted universe
deb precise-updates main multiverse restricted universe
deb-src precise main multiverse restricted universe
deb-src precise-backports main multiverse restricted universe
deb-src precise-proposed main multiverse restricted universe
deb-src precise-security main multiverse restricted universe
deb-src precise-updates main multiverse restricted universe