linux 中apt-get update源设置

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sudo apt-get update经常会出现如下错误：

Err http://security.ubuntu.com trusty-security/main amd64 Packages             404  Not Found [IP: 91.189.91.26 80]  Fetched 1,107 kB in 11s (92.8 kB/s)   W: GPG error: http://extras.ubuntu.com trusty Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 16126D3A3E5C1192  W: Failed to fetch http://security.ubuntu.com/ubuntu/dists/trusty-security/main/binary-amd64/Packages  404  Not Found [IP: 91.189.91.26 80]  W: Failed to fetch http://security.ubuntu.com/ubuntu/dists/trusty-security/main/binary-i386/Packages  Hash Sum mismatch  E: Some index files failed to download. They have been ignored, or old ones used instead.

搜寻资料显示是源的故障：指令sudo apt-get update 会报同样的错误

所以清空源缓存：指令：sudo rm -vfr /var/lib/apt/lists/*

指令：sudo rm -rf /var/lib/apt/lists/partial/*

更改源：指令 sudo vim /etc/apt/sources.list

将之前的源去掉，或者添加 # 到源前面。

然后添加下来源，并且sudo apt-get update 和 sudo apt-get upgrade

#阿里源（此行不复制）deb http://mirrors.aliyun.com/ubuntu/ xenial main restricted universe multiverse  deb http://mirrors.aliyun.com/ubuntu/ xenial-security main restricted universe multiverse  deb http://mirrors.aliyun.com/ubuntu/ xenial-updates main restricted universe multiverse  deb http://mirrors.aliyun.com/ubuntu/ xenial-backports main restricted universe multiverse  ##测试版源  deb http://mirrors.aliyun.com/ubuntu/ xenial-proposed main restricted universe multiverse  # 源码  deb-src http://mirrors.aliyun.com/ubuntu/ xenial main restricted universe multiverse  deb-src http://mirrors.aliyun.com/ubuntu/ xenial-security main restricted universe multiverse  deb-src http://mirrors.aliyun.com/ubuntu/ xenial-updates main restricted universe multiverse  deb-src http://mirrors.aliyun.com/ubuntu/ xenial-backports main restricted universe multiverse  ##测试版源  deb-src http://mirrors.aliyun.com/ubuntu/ xenial-proposed main restricted universe multiverse  # Canonical 合作伙伴和附加  deb http://archive.canonical.com/ubuntu/ xenial partner  deb http://extras.ubuntu.com/ubuntu/ xenial main

#中科大的源（此行不粘贴）deb http://mirrors.ustc.edu.cn/ubuntu/ precise-updates main restricteddeb-src http://mirrors.ustc.edu.cn/ubuntu/ precise-updates main restricteddeb http://mirrors.ustc.edu.cn/ubuntu/ precise universedeb-src http://mirrors.ustc.edu.cn/ubuntu/ precise universedeb http://mirrors.ustc.edu.cn/ubuntu/ precise-updates universedeb-src http://mirrors.ustc.edu.cn/ubuntu/ precise-updates universedeb http://mirrors.ustc.edu.cn/ubuntu/ precise multiversedeb-src http://mirrors.ustc.edu.cn/ubuntu/ precise multiversedeb http://mirrors.ustc.edu.cn/ubuntu/ precise-updates multiversedeb-src http://mirrors.ustc.edu.cn/ubuntu/ precise-updates multiversedeb http://mirrors.ustc.edu.cn/ubuntu/ precise-backports main restricted universe multiversedeb-src http://mirrors.ustc.edu.cn/ubuntu/ precise-backports main restricted universe multiversedeb http://security.ubuntu.com/ubuntu precise-security main restricteddeb-src http://security.ubuntu.com/ubuntu precise-security main restricteddeb http://security.ubuntu.com/ubuntu precise-security universedeb-src http://security.ubuntu.com/ubuntu precise-security universedeb http://security.ubuntu.com/ubuntu precise-security multiversedeb-src http://security.ubuntu.com/ubuntu precise-security multiverse

#搜狐源（此行不粘贴）deb http://mirrors.sohu.com/ubuntu/ precise-updates main restricteddeb-src http://mirrors.sohu.com/ubuntu/ precise-updates main restricteddeb http://mirrors.sohu.com/ubuntu/ precise universedeb-src http://mirrors.sohu.com/ubuntu/ precise universedeb http://mirrors.sohu.com/ubuntu/ precise-updates universedeb-src http://mirrors.sohu.com/ubuntu/ precise-updates universedeb http://mirrors.sohu.com/ubuntu/ precise multiversedeb-src http://mirrors.sohu.com/ubuntu/ precise multiversedeb http://mirrors.sohu.com/ubuntu/ precise-updates multiversedeb-src http://mirrors.sohu.com/ubuntu/ precise-updates multiversedeb http://mirrors.sohu.com/ubuntu/ precise-backports main restricted universe multiversedeb-src http://mirrors.sohu.com/ubuntu/ precise-backports main restricted universe multiverse

#网易源（此行不粘贴）deb http://mirrors.163.com/ubuntu/ precise-updates main restricteddeb-src http://mirrors.163.com/ubuntu/ precise-updates main restricteddeb http://mirrors.163.com/ubuntu/ precise universedeb-src http://mirrors.163.com/ubuntu/ precise universedeb http://mirrors.163.com/ubuntu/ precise-updates universedeb-src http://mirrors.163.com/ubuntu/ precise-updates universedeb http://mirrors.163.com/ubuntu/ precise multiversedeb-src http://mirrors.163.com/ubuntu/ precise multiversedeb http://mirrors.163.com/ubuntu/ precise-updates multiversedeb-src http://mirrors.163.com/ubuntu/ precise-updates multiversedeb http://mirrors.163.com/ubuntu/ precise-backports main restricted universe multiversedeb-src http://mirrors.163.com/ubuntu/ precise-backports main restricted universe multiverse

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