备份软件源:

sudo cp /etc/apt/sources.list /etc/apt/sources.list_backup

编辑软件源:

sudo gedit /etc/apt/sources.list

更新软件源:

sudo apt-get update

#—– contents of sources.list  —————————————————————#

#传说中的中国科技大学 5M/s
deb http://debian.ustc.edu.cn/ubuntu/ karmic main restricted universe multiverse
deb http://debian.ustc.edu.cn/ubuntu/ karmic-backports restricted universe multiverse
deb http://debian.ustc.edu.cn/ubuntu/ karmic-proposed main restricted universe multiverse
deb http://debian.ustc.edu.cn/ubuntu/ karmic-security main restricted universe multiverse Read more »