Debian 6.0.7
deb http://mirrors.163.com/debian squeeze main non-free contrib
deb http://mirrors.163.com/debian squeeze-proposed-updates main contrib non-free
deb-src http://mirrors.163.com/debian squeeze main non-free contrib
deb-src http://mirrors.163.com/debian squeeze-proposed-updates main contrib non-free
deb http://mirrors.163.com/debian-security squeeze/updates main contrib non-free
deb-src http://mirrors.163.com/debian-security squeeze/updates main contrib non-free
deb http://http.us.debian.org/debian squeeze main contrib non-free
deb http://non-us.debian.org/debian-non-US squeeze/non-US main contrib non-free
deb http://security.debian.org squeeze/updates main contrib non-free
Debian(squeeze) 设置 apt 源
deb http://mirrors.ustc.edu.cn/debian/ squeeze main non-free contrib
deb http://mirrors.ustc.edu.cn/debian/ squeeze-proposed-updates main non-free contrib
deb-src http://mirrors.ustc.edu.cn/debian/ squeeze main non-free contrib
deb-src http://mirrors.ustc.edu.cn/debian/ squeeze-proposed-updates main non-free contrib
deb http://mirrors.ustc.edu.cn/debian-backports/ squeeze-backports main contrib non-free
deb-src http://mirrors.ustc.edu.cn/debian-backports/ squeeze-backports main contrib non-free
deb http://mirrors.ustc.edu.cn/debian-multimedia/ squeeze-backports main contrib non-free
deb-src http://mirrors.ustc.edu.cn/debian-multimedia/ squeeze-backports main contrib non-free
deb http://mirrors.ustc.edu.cn/debian-security/ squeeze/updates main non-free contrib
deb-src http://mirrors.ustc.edu.cn/debian-security/ squeeze/updates main non-free contrib
# apt-get update
如何更新Debian源和导入公钥
一、国内源：
163
deb http://mirrors.163.com/debian/ squeeze main non-free contrib
deb http://mirrors.163.com/debian/ squeeze-proposed-updates main contrib non-free
deb http://mirrors.163.com/debian-security/ squeeze/updates main contrib non-free
deb-src http://mirrors.163.com/debian/ squeeze main non-free contrib
deb-src http://mirrors.163.com/debian/ squeeze-proposed-updates main contrib non-free
deb-src http://mirrors.163.com/debian-security/ squeeze/updates main contrib non-free
教育
deb http://ftp.sjtu.edu.cn/debian/ squeeze main non-free contrib
deb http://ftp.sjtu.edu.cn/debian/ squeeze-proposed-updates main contrib non-free
deb http://ftp.sjtu.edu.cn/debian-security/ squeeze/updates main contrib non-free
科技大学
deb http://ftp.cn.debian.org/debian squeeze main contrib non-free
deb-src http://ftp.cn.debian.org/debian squeeze main contrib non-free *主站
deb http://ftp.tw.debian.org/debian squeeze main contrib non-free
deb-src http://ftp.tw.debian.org/debian squeeze main contrib non-free 香港
deb http://ftp.hk.debian.org/debian squeeze main contrib non-free
deb-src http://ftp.hk.debian.org/debian squeeze main contrib non-free 搜狐镜像
deb http://mirrors.sohu.com/debian squeeze main contrib non-free
deb-src http://mirrors.sohu.com/debian squeeze main contrib non-free 北京理工大学
deb http://mirror.bitunion.org/debian/ stable main contrib non-free
deb-src http://mirror.bitunion.org/debian/ stable main contrib non-free
二、官方源
deb http://ftp.debian.org/debian/ squeeze main contrib non-free
deb-src http://ftp.debian.org/debian/ squeeze main contrib non-free
deb http://security.debian.org/ squeeze/updates main
deb-src http://security.debian.org/ squeeze/updates main
deb http://mirrors.kernel.org/debian/ squeeze main contrib non-free
deb-src http://mirrors.kernel.org/debian/ squeeze main contrib non-free
三、dotdeb源 官方
deb http://packages.dotdeb.org stable all
deb-src http://packages.dotdeb.org stable all
deb http://php53.dotdeb.org stable all
deb-src http://php53.dotdeb.org stable all dotdeb japan 源
deb http://download.softagency.net/debian/dotdeb/ stable all
deb-src http://download.softagency.net/debian/dotdeb/ stable all
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在此说明配置源的方法：
很简单，把源地址写进 /etc/apt/sources.list 就可以了。
可以用 # 注释。
推荐163，搜狐等源。
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sources.list 写好后，需要更新一下。使用如下命令：
apt-get update
如果提醒你需要导入密钥，则：
gpg --keyserver <KeyServer> --recv <公钥签名>gpg --export --armor <公钥签名> | sudo apt-key add -
其中：
<KeyServer>，key服务器，可以填 keyserver.ubuntu.com ，当然也可以是 其他的喽。
公钥签名会在update的提示中说明的。
也可是使用如下形式：
apt-key adv --keyserver <KeyServer> --recv-keys <公钥签名>
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5
经过以上步骤，源已经更新完毕，可以试着使用新源更新一下软件库喽：
apt-get upgrade