修改ubuntu的更新源

备份更新源设置： ＃ sudo cp /etc/apt/sources.list
/etc/apt/sources.list_backup

修 改更新源设置： # sudo gedit /etc/apt/sources.list

更新软件列表： # sudo apt-get
update

升级：#sudo apt-get upgrade

据说163的源是最快的：

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

deb-src http://mirrors.163.com/ubuntu/ lucid
main universe restricted multiverse

deb http://mirrors.163.com/ubuntu/ lucid-security
universe main multiverse restricted

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

deb http://mirrors.163.com/ubuntu/ lucid-updates
universe main multiverse restricted

deb http://mirrors.163.com/ubuntu/ lucid-proposed
universe main multiverse restricted

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

deb http://mirrors.163.com/ubuntu/ lucid-backports
universe main multiverse restricted

deb-src http://mirrors.163.com/ubuntu/ lucid-backports
universe main multiverse restricted

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