摘要：本文列出ubuntu 12.04 LTS更新源列表，內容爲網友整理，此處爲轉載,供大家和自己以後留着用。
ubuntu系統與網絡關係密切，往往在完成系統安裝之後需要進行必需軟件的安裝及更新。方法網上都可以找得到，這裏再重述一下。
首先，使用su root切換至超級用戶權限；
然後，gedit /etc/apt/sources.list，打開源列表文件，這裏沒有進行備份，如果需要，也可以用cp命令進行下備份；
將以下所示的源列表之一全部複製到sources.list文件中，替換原有內容；
最後，保存並關閉已經打開的source.list文件，在終端輸入 apt-get update命令。
以上三步即完成源列表的更新。
#臺灣源
1 deb http://tw.archive.ubuntu.com/ubuntu/ precise main universe restricted multiverse
2 deb-src http://tw.archive.ubuntu.com/ubuntu/ precise main universe restricted multiverse
3 deb http://tw.archive.ubuntu.com/ubuntu/ precise-security universe main multiverse restricted
4 deb-src http://tw.archive.ubuntu.com/ubuntu/ precise-security universe main multiverse restricted
5 deb http://tw.archive.ubuntu.com/ubuntu/ precise-updates universe main multiverse restricted
6 deb-src http://tw.archive.ubuntu.com/ubuntu/ precise-updates universe main multiverse restricted
#網易 Ubuntu 源（速度很快）
7 deb http://mirrors.163.com/ubuntu/ precise main universe restricted multiverse
8 deb-src http://mirrors.163.com/ubuntu/ precise main universe restricted multiverse
9 deb http://mirrors.163.com/ubuntu/ precise-security universe main multiverse restricted
10 deb-src http://mirrors.163.com/ubuntu/ precise-security universe main multiverse restricted
11 deb http://mirrors.163.com/ubuntu/ precise-updates universe main multiverse restricted
12 deb http://mirrors.163.com/ubuntu/ precise-proposed universe main multiverse restricted
13 deb-src http://mirrors.163.com/ubuntu/ precise-proposed universe main multiverse restricted
14 deb http://mirrors.163.com/ubuntu/ precise-backports universe main multiverse restricted
15 deb-src http://mirrors.163.com/ubuntu/ precise-backports universe main multiverse restricted
16 deb-src http://mirrors.163.com/ubuntu/ precise-updates universe main multiverse restricted
#骨頭源，骨頭源是bones7456架設的一個Ubuntu源 ，提供ubuntu,deepin
17 deb http://ubuntu.srt.cn/ubuntu/ precise main universe restricted multiverse
18 deb-src http://ubuntu.srt.cn/ubuntu/ precise main universe restricted multiverse
19 deb http://ubuntu.srt.cn/ubuntu/ precise-security universe main multiverse restricted
20 deb-src http://ubuntu.srt.cn/ubuntu/ precise-security universe main multiverse restricted
21 deb http://ubuntu.srt.cn/ubuntu/ precise-updates universe main multiverse restricted
22 deb http://ubuntu.srt.cn/ubuntu/ precise-proposed universe main multiverse restricted
23 deb-src http://ubuntu.srt.cn/ubuntu/ precise-proposed universe main multiverse restricted
24 deb http://ubuntu.srt.cn/ubuntu/ precise-backports universe main multiverse restricted
25 deb-src http://ubuntu.srt.cn/ubuntu/ precise-backports universe main multiverse restricted
26 deb-src http://ubuntu.srt.cn/ubuntu/ precise-updates universe main multiverse restricted
#mirror.lupaworld.com的源，速度很快
27 deb http://mirror.lupaworld.com/ubuntu/archive/ precise main restricted universe multiverse
28 deb http://mirror.lupaworld.com/ubuntu/archive/ precise-security main restricted universe multiverse
29 deb http://mirror.lupaworld.com/ubuntu/archive/ precise-updates main restricted universe multiverse
30 deb http://mirror.lupaworld.com/ubuntu/archive/ precise-backports main restricted universe multiverse
31 deb http://mirror.lupaworld.com/ubuntu/ubuntu-cn/ precise main restricted universe multiverse
#ubuntu.cn99.com源（推薦）:
32 deb http://ubuntu.cn99.com/ubuntu/ precise main restricted universe multiverse
33 deb http://ubuntu.cn99.com/ubuntu/ precise-updates main restricted universe multiverse
34 deb http://ubuntu.cn99.com/ubuntu/ precise-security main restricted universe multiverse
35 deb http://ubuntu.cn99.com/ubuntu/ precise-backports main restricted universe multiverse
36 deb http://ubuntu.cn99.com/ubuntu-cn/ precise main restricted universe multiverse
#電子科技大學
37 deb http://ubuntu.uestc.edu.cn/ubuntu/ precise main restricted universe multiverse
38 deb http://ubuntu.uestc.edu.cn/ubuntu/ precise-backports main restricted universe multiverse
39 deb http://ubuntu.uestc.edu.cn/ubuntu/ precise-proposed main restricted universe multiverse
40 deb http://ubuntu.uestc.edu.cn/ubuntu/ precise-security main restricted universe multiverse
41 deb http://ubuntu.uestc.edu.cn/ubuntu/ precise-updates main restricted universe multiverse
42 deb-src http://ubuntu.uestc.edu.cn/ubuntu/ precise main restricted universe multiverse
43 deb-src http://ubuntu.uestc.edu.cn/ubuntu/ precise-backports main restricted universe multiverse
44 deb-src http://ubuntu.uestc.edu.cn/ubuntu/ precise-proposed main restricted universe multiverse
45 deb-src http://ubuntu.uestc.edu.cn/ubuntu/ precise-security main restricted universe multiverse
46 deb-src http://ubuntu.uestc.edu.cn/ubuntu/ precise-updates main restricted universe multiverse
#中國科技大學
47 deb http://debian.ustc.edu.cn/ubuntu/ precise main restricted universe multiverse
48 deb http://debian.ustc.edu.cn/ubuntu/ precise-backports restricted universe multiverse
49 deb http://debian.ustc.edu.cn/ubuntu/ precise-proposed main restricted universe multiverse
50 deb http://debian.ustc.edu.cn/ubuntu/ precise-security main restricted universe multiverse
51 deb http://debian.ustc.edu.cn/ubuntu/ precise-updates main restricted universe multiverse
52 deb-src http://debian.ustc.edu.cn/ubuntu/ precise main restricted universe multiverse
53 deb-src http://debian.ustc.edu.cn/ubuntu/ precise-backports main restricted universe multiverse
54 deb-src http://debian.ustc.edu.cn/ubuntu/ precise-proposed main restricted universe multiverse
55 deb-src http://debian.ustc.edu.cn/ubuntu/ precise-security main restricted universe multiverse
56 deb-src http://debian.ustc.edu.cn/ubuntu/ precise-updates main restricted universe multiverse
#北京理工大學
57 deb http://mirror.bjtu.edu.cn/ubuntu/ precise main multiverse restricted universe
58 deb http://mirror.bjtu.edu.cn/ubuntu/ precise-backports main multiverse restricted universe
59 deb http://mirror.bjtu.edu.cn/ubuntu/ precise-proposed main multiverse restricted universe
60 deb http://mirror.bjtu.edu.cn/ubuntu/ precise-security main multiverse restricted universe
61 deb http://mirror.bjtu.edu.cn/ubuntu/ precise-updates main multiverse restricted universe
62 deb-src http://mirror.bjtu.edu.cn/ubuntu/ precise main multiverse restricted universe
63 deb-src http://mirror.bjtu.edu.cn/ubuntu/ precise-backports main multiverse restricted universe
64 deb-src http://mirror.bjtu.edu.cn/ubuntu/ precise-proposed main multiverse restricted universe
65 deb-src http://mirror.bjtu.edu.cn/ubuntu/ precise-security main multiverse restricted universe
66 deb-src http://mirror.bjtu.edu.cn/ubuntu/ precise-updates main multiverse restricted universe
#蘭州大學
67 deb ftp://mirror.lzu.edu.cn/ubuntu/ precise main multiverse restricted universe
68 deb ftp://mirror.lzu.edu.cn/ubuntu/ precise-backports main multiverse restricted universe
69 deb ftp://mirror.lzu.edu.cn/ubuntu/ precise-proposed main multiverse restricted universe
70 deb ftp://mirror.lzu.edu.cn/ubuntu/ precise-security main multiverse restricted universe
71 deb ftp://mirror.lzu.edu.cn/ubuntu/ precise-updates main multiverse restricted universe
72 deb ftp://mirror.lzu.edu.cn/ubuntu-cn/ precise main multiverse restricted universe
#上海交通大學
73 deb http://ftp.sjtu.edu.cn/ubuntu/ precise main multiverse restricted universe
74 deb http://ftp.sjtu.edu.cn/ubuntu/ precise-backports main multiverse restricted universe
75 deb http://ftp.sjtu.edu.cn/ubuntu/ precise-proposed main multiverse restricted universe
76 deb http://ftp.sjtu.edu.cn/ubuntu/ precise-security main multiverse restricted universe
77 deb http://ftp.sjtu.edu.cn/ubuntu/ precise-updates main multiverse restricted universe
78 deb http://ftp.sjtu.edu.cn/ubuntu-cn/ precise main multiverse restricted universe
79 deb-src http://ftp.sjtu.edu.cn/ubuntu/ precise main multiverse restricted universe
80 deb-src http://ftp.sjtu.edu.cn/ubuntu/ precise-backports main multiverse restricted universe
81 deb-src http://ftp.sjtu.edu.cn/ubuntu/ precise-proposed main multiverse restricted universe
82 deb-src http://ftp.sjtu.edu.cn/ubuntu/ precise-security main multiverse restricted universe
83 deb-src http://ftp.sjtu.edu.cn/ubuntu/ precise-updates main multiverse restricted universe