#將文件裡的內容全部刪除，當然之前也可以用
sudo cp /etc/apt/sources.list /etc/apt/sources.list.bak#好習慣就是這樣養成的 （注：只復制粘貼所有deb開頭的行。細心的讀者會發現源sources.list文件中有以許多#開頭的行，這個#意味這此行為注釋行，不起作用，剩余 的deb的行才是真正的源）
Ubuntu 10.04 台灣更新源：
deb http://tw.archive.ubuntu.com/ubuntu/ lucid main universe restricted multiverse
deb http://tw.archive.ubuntu.com/ubuntu/ lucid-updates universe main multiverse restricted
deb http://tw.archive.ubuntu.com/ubuntu/ lucid-proposed universe main multiverse restricted
deb http://tw.archive.ubuntu.com/ubuntu/ lucid-security universe main multiverse restricted
deb http://tw.archive.ubuntu.com/ubuntu/ lucid-backports main multiverse restricted universe
deb-src http://tw.archive.ubuntu.com/ubuntu/ lucid main universe restricted multiverse
deb-src http://tw.archive.ubuntu.com/ubuntu/ lucid-security universe main multiverse restricted
deb-src http://tw.archive.ubuntu.com/ubuntu/ lucid-updates universe main multiverse restricted
deb-src http://tw.archive.ubuntu.com/ubuntu/ lucid-proposed universe main multiverse restricted
deb-src http://tw.archive.ubuntu.com/ubuntu/ lucid-backports universe main multiverse restricted
Ubuntu 10.04更新源 -Lucid Lynx-中國源 提供 ArchLinux，Everest，FreeBSD，Fedora，LFS，Magiclinux，Mandriva，OpenOffice，openSUSE，Puppy，RedHat，Slitaz，Turbolinux，Ubuntu， 中標普華
deb http://mirror.lupaworld.com/Ubuntu/ lucid main universe restricted multiverse
deb-src http://mirror.lupaworld.com/Ubuntu/ lucid main universe restricted multiverse
deb http://mirror.lupaworld.com/Ubuntu/ lucid-security universe main multiverse restricted
deb-src http://mirror.lupaworld.com/Ubuntu/ lucid-security universe main multiverse restricted
deb http://mirror.lupaworld.com/Ubuntu/ lucid-updates universe main multiverse restricted
deb http://mirror.lupaworld.com/Ubuntu/ lucid-proposed universe main multiverse restricted
deb-src http://mirror.lupaworld.com/Ubuntu/ lucid-proposed universe main multiverse restricted
deb http://mirror.lupaworld.com/Ubuntu/ lucid-backports universe main multiverse restricted
deb-src http://mirror.lupaworld.com/Ubuntu/ lucid-backports universe main multiverse restricted
deb-src http://mirror.lupaworld.com/Ubuntu/ lucid-updates universe main multiverse restricted
rootguide源，Ubuntu官方上海源，提供 Kernel，Hiweed，ubuntu
deb http://mirror.rootguide.org/Ubuntu/ lucid main universe restricted multiverse
deb-src http://mirror.rootguide.org/Ubuntu/ lucid main universe restricted multiverse
deb http://mirror.rootguide.org/Ubuntu/ lucid-security universe main multiverse restricted
deb-src http://mirror.rootguide.org/Ubuntu/ lucid-security universe main multiverse restricted
deb http://mirror.rootguide.org/Ubuntu/ lucid-updates universe main multiverse restricted
deb http://mirror.rootguide.org/Ubuntu/ lucid-proposed universe main multiverse restricted
deb-src http://mirror.rootguide.org/Ubuntu/ lucid-proposed universe main multiverse restricted
deb http://mirror.rootguide.org/Ubuntu/ lucid-backports universe main multiverse restricted
deb-src http://mirror.rootguide.org/Ubuntu/ lucid-backports universe main multiverse restricted
deb-src http://mirror.rootguide.org/Ubuntu/ lucid-updates universe main multiverse restricted
網易開源鏡像站,提供 FreeBSD，OpenBSD，archlinux，CentOS，cygwin，debian，Fedora，gentoo，kernel，openSUSE，slackware，Ubuntu
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
搜狐開源鏡像站，提供 CPAN，FreeBSD，NetBSD，OpenBSD，apache，archlinux，centos，cygwin，dag，debian，Fedora，gentoo，kernel，lfs，mysql，nginx，openSUSE，php，rpmfusion，slackware，Ubuntu
deb http://mirrors.shlug.org/Ubuntu/ lucid main universe restricted multiverse
deb-src http://mirrors.shlug.org/Ubuntu/ lucid main universe restricted multiverse
deb http://mirrors.shlug.org/Ubuntu/ lucid-security universe main multiverse restricted
deb-src http://mirrors.shlug.org/Ubuntu/ lucid-security universe main multiverse restricted
deb http://mirrors.shlug.org/Ubuntu/ lucid-updates universe main multiverse restricted
deb http://mirrors.shlug.org/Ubuntu/ lucid-proposed universe main multiverse restricted
deb-src http://mirrors.shlug.org/Ubuntu/ lucid-proposed universe main multiverse restricted
deb http://mirrors.shlug.org/Ubuntu/ lucid-backports universe main multiverse restricted
deb-src http://mirrors.shlug.org/Ubuntu/ lucid-backports universe main multiverse restricted
deb-src http://mirrors.shlug.org/Ubuntu/ lucid-updates universe main multiverse restricted
網易開源鏡像站,提供 FreeBSD，OpenBSD，archlinux，centos，cygwin，debian，Fedora，gentoo，kernel，openSUSE，slackware，Ubuntu
deb http://Ubuntu.cn99.com/ubuntu/ lucid main universe restricted multiverse
deb-src http://Ubuntu.cn99.com/ubuntu/ lucid main universe restricted multiverse
deb http://Ubuntu.cn99.com/ubuntu/ lucid-security universe main multiverse restricted
deb-src http://Ubuntu.cn99.com/ubuntu/ lucid-security universe main multiverse restricted
deb http://Ubuntu.cn99.com/ubuntu/ lucid-updates universe main multiverse restricted
deb http://Ubuntu.cn99.com/ubuntu/ lucid-proposed universe main multiverse restricted
deb-src http://Ubuntu.cn99.com/ubuntu/ lucid-proposed universe main multiverse restricted
deb http://Ubuntu.cn99.com/ubuntu/ lucid-backports universe main multiverse restricted
deb-src http://Ubuntu.cn99.com/ubuntu/ lucid-backports universe main multiverse restricted
deb-src http://Ubuntu.cn99.com/ubuntu/ lucid-updates universe main multiverse restricted
骨頭源，提供Ubuntu,deepin
deb http://Ubuntu.srt.cn/ubuntu/ lucid main universe restricted multiverse
deb-src http://Ubuntu.srt.cn/ubuntu/ lucid main universe restricted multiverse
deb http://Ubuntu.srt.cn/ubuntu/ lucid-security universe main multiverse restricted
deb-src http://Ubuntu.srt.cn/ubuntu/ lucid-security universe main multiverse restricted
deb http://Ubuntu.srt.cn/ubuntu/ lucid-updates universe main multiverse restricted
deb http://Ubuntu.srt.cn/ubuntu/ lucid-proposed universe main multiverse restricted
deb-src http://Ubuntu.srt.cn/ubuntu/ lucid-proposed universe main multiverse restricted
deb http://Ubuntu.srt.cn/ubuntu/ lucid-backports universe main multiverse restricted
deb-src http://Ubuntu.srt.cn/ubuntu/ lucid-backports universe main multiverse restricted
deb-src http://Ubuntu.srt.cn/ubuntu/ lucid-updates universe main multiverse restricted保存後輸入下面的指令刷新源信息： #sudo apt-get update 然後輸入： #sudo apt-get upgrade