1、执行sudo gedit /etc/apt/sources.list，删除其中的内容，添加

 

deb http://mirrors.163.com// maverick main universe restricted multiverse

deb http://security.ubuntu.com/ubuntu/ maverick-security universe main multiverse restricted deb-src http://security.ubuntu.com/ubuntu/ maverick-security universe main multiverse restricted deb http://mirrors.163.com/ubuntu/ maverick-updates universe main multiverse restricted deb-src http://mirrors.163.com/ubuntu/ maverick-updates universe main multiverse restricted deb http://mirrors.163.com/ubuntu/ maverick-proposed universe main multiverse restricted deb-src http://mirrors.163.com/ubuntu/ maverick-proposed universe main multiverse restricted deb-src http://mirrors.163.com/ubuntu/ maverick main universe restricted multiverse

 

2、sudo apt-get update 更新源列表信息

 

3、sudo apt-get upgrade 升级