debian7 更新国内源

vi /etc/apt/sources.list

dd命令删除整行

阿里云源
deb http://security.debian.org/ wheezy/updates main
deb-src http://security.debian.org/ wheezy/updates main
deb http://mirrors.aliyun.com/debian wheezy main contrib non-free
deb-src http://mirrors.aliyun.com/debian wheezy main contrib non-free
deb http://mirrors.aliyun.com/debian wheezy-updates main contrib non-free
deb-src http://mirrors.aliyun.com/debian wheezy-updates main contrib non-free
deb http://mirrors.aliyun.com/debian-security wheezy/updates main contrib non-free
deb-src http://mirrors.aliyun.com/debian-security wheezy/updates main contrib non-free

或者网易源

deb http://security.debian.org/ wheezy/updates main
deb-src http://security.debian.org/ wheezy/updates main
deb http://mirrors.163.com/debian/ wheezy main non-free contrib
deb http://mirrors.163.com/debian/ wheezy-updates main non-free contrib
deb http://mirrors.163.com/debian/ wheezy-backports main non-free contrib
deb-src http://mirrors.163.com/debian/ wheezy main non-free contrib
deb-src http://mirrors.163.com/debian/ wheezy-updates main non-free contrib
deb-src http://mirrors.163.com/debian/ wheezy-backports main non-free contrib
deb http://mirrors.163.com/debian-security/ wheezy/updates main non-free contrib
deb-src http://mirrors.163.com/debian-security/ wheezy/updates main non-free contrib