Ubuntu apt-get install 问题： Could not resolve 'cn.archive.ubuntu.com'

问题描述：

今天使用Ubuntu 安装Ctags 时，遇见以下问题：

sudo apt-get install ctags

Reading package lists... Done

Building dependency tree

Reading state information... Done

Note, selecting 'exuberant-ctags' instead of 'ctags'

The following NEW packages will be installed:

exuberant-ctags

0 upgraded, 1 newly installed, 0 to remove and 356 not upgraded.

Need to get 133 kB of archives.

After this operation, 308 kB of additional disk space will be used.

Err http://cn.archive.ubuntu.com/ubuntu/ saucy/main exuberant-ctags i386 1:5.9~svn20110310-6

Could not resolve 'cn.archive.ubuntu.com'

Failed to fetch http://cn.archive.ubuntu.com/ubuntu/pool/main/e/exuberant-ctags/exuberant-ctags_5.9~svn20110310-6_i386.deb Could not resolve 'cn.archive.ubuntu.com'

E: Unable to fetch some archives, maybe run apt-get update or try with --fix-missing?

解决方法：

从Error Message 上看来似乎是“cn.archive.ubuntu.com”域名解析出错。于是在Terminal 里Ping了一下这个域名，发现可以Ping 通。

ping cn.archive.ubuntu.com

PING mirror.neu.edu.cn (202.118.1.64) 56(84) bytes of data.

64 bytes from ftp2.neu.edu.cn (202.118.1.64): icmp_seq=1 ttl=45 time=86.3 ms

64 bytes from ftp2.neu.edu.cn (202.118.1.64): icmp_seq=2 ttl=45 time=100 ms

64 bytes from ftp2.neu.edu.cn (202.118.1.64): icmp_seq=3 ttl=45 time=86.8 ms

于是尝试通过修改 /etc/hosts 解决这个问题：

vi /etc/hosts
在文件末尾加入 “202.118.1.64 cn.archive.ubuntu.com”。
运行 “#/etc/init.d/networking restart” 重启网络。
运行 “sudo apt-get install ctags” 重新安装Ctags，成功！！！