每10小时更新一次
以Squeeze为例, 编辑/etc/apt/sources.list文件, 在文件最前面添加以下条目(操作前请做好相应备份)
deb http://mirrors.163.com/debian/ squeeze main non-free contrib deb http://mirrors.163.com/debian/ squeeze-updates main non-free contrib deb http://mirrors.163.com/debian/ squeeze-lts main non-free contrib deb-src http://mirrors.163.com/debian/ squeeze main non-free contrib deb-src http://mirrors.163.com/debian/ squeeze-updates main non-free contrib deb-src http://mirrors.163.com/debian/ squeeze-lts main non-free contrib deb http://mirrors.163.com/debian-security/ squeeze/updates main non-free contrib deb-src http://mirrors.163.com/debian-security/ squeeze/updates main non-free contrib deb http://mirrors.163.com/debian-backports/ squeeze-backports main contrib non-free deb-src http://mirrors.163.com/debian-backports/ squeeze-backports main contrib non-free
或者下载相应版本的sources.list, 覆盖/etc/apt/sources.list即可(操作前请做好相应备份)