我有一个在学校维护的镜像服务器。
$ uname -a Linux CSE-Cloud01 4.0.0-1-amd64 #1 SMP Debian 4.0.2-1 (2015-05-11) x86_64 GNU/Linux
$ sudo apt-get 更新
......
W: Failed to fetch http:// mirror.cs.nchu.edu.tw/debian/dists/jessie/main/source/Sources Hash Sum mismatch
W: Failed to fetch http:// mirror.cs.nchu.edu.tw/debian/dists/jessie/main/binary-amd64/Packages Hash Sum mismatch
W: Failed to fetch http:// mirror.cs.nchu.edu.tw/debian/dists/jessie/non-free/binary-amd64/Packages Hash Sum mismatch
W: Failed to fetch http:// mirror.cs.nchu.edu.tw/debian/dists/jessie/main/i18n/Translation-en Hash Sum mismatch
E: Some index files failed to download. They have been ignored, or old ones used instead.
在镜像本身或我的某些机器中，它最终失败了。（有些工作正常。）我曾尝试执行以下推荐的命令，但无法正常工作
$ apt-get clean
$ rm -rf /var/cache/apt/*
$ …