关于Ubuntu源列表的更改 - source list

大部分的说明都会给出我们源列表，但是很多源列表用了都没有作用，等于白说来！

例如：某给出源列表如下：经过测试我无法使用这个源列表！

deb http://mirrors.163.com/ubuntu/ quantal main universe restricted multiverse

deb http://mirrors.163.com/ubuntu/ quantal-security universe main multiverse restricted

deb http://mirrors.163.com/ubuntu/ quantal-updates universe main multiverse restricted

deb http://mirrors.163.com/ubuntu/ quantal-proposed universe main multiverse restricted

deb http://mirrors.163.com/ubuntu/ quantal-backports universe main multiverse restricted

deb-src http://mirrors.163.com/ubuntu/ quantal main universe restricted multiverse

deb-src http://mirrors.163.com/ubuntu/ quantal-security universe main multiverse restricted

deb-src http://mirrors.163.com/ubuntu/ quantal-updates universe main multiverse restricted

deb-src http://mirrors.163.com/ubuntu/ quantal-proposed universe main multiverse restricted

deb-src http://mirrors.163.com/ubuntu/ quantal-backports universe main multiverse restricted

经过研究，我登录了http://mirrors.163.com/ubuntu/ ，进入到dists，根本没有发现quantal这个的包，于是我猜测这个可能是过时的，已经被服务器去掉了！我改为dists里面存在的名字！！如下：

可以看到出源位置，当我们无法get源的时候，多数是地址的名字的改变，我们可以试图登录http://mirrors.163.com/ubuntu/查看：

在进入dists：

就会发现有这些，但是没有 quantal main universe restricted multiverse

有的是 lucid main universe restricted multiverse 

所以上面的源是旧了的，服务器不存在，我们可以改回来，只需要 quantal替换成lucid或者是上面的一个都可以！！！即可！

deb http://mirrors.163.com/ubuntu/lucid main universe restricted multiverse

deb http://mirrors.163.com/ubuntu/lucid-security universe main multiverse restricted

deb http://mirrors.163.com/ubuntu/lucid-updates universe main multiverse restricted

deb http://mirrors.163.com/ubuntu/lucid-proposed universe main multiverse restricted

deb http://mirrors.163.com/ubuntu/lucid-backports universe main multiverse restricted

deb-src http://mirrors.163.com/ubuntu/lucid main universe restricted multiverse

deb-src http://mirrors.163.com/ubuntu/lucid-security universe main multiverse restricted

deb-src http://mirrors.163.com/ubuntu/lucid-updates universe main multiverse restricted

deb-src http://mirrors.163.com/ubuntu/lucid-proposed universe main multiverse restricted

deb-src http://mirrors.163.com/ubuntu/ lucid-backports universe main multiverse restricted

当然对于其他源，可以这样子改，像搜狐的源等 一般都会在dists面存放着的！