哦，其實(shí)下面的都可以當(dāng)作廢話的說，因?yàn)樵诟鹿芾砥骼锩嬗凶詣优渲米罴逊?wù)器的選項(xiàng)來的，（具體在哪里？？是在選擇服務(wù)器站點(diǎn) 其他站點(diǎn) 然后就會出現(xiàn)了?。。┻@是有位朋友提醒的說，很方便，更新速度很快??！
在終端輸入并運(yùn)行
sudo cp /etc/apt/sources.list /etc/apt/sources.list.backup （備份當(dāng)前的源列表，以便日後需要時(shí)恢復(fù)）
sudo gedit /etc/apt/sources.list （修改sources.list文件中源的列表）
sources.list文件中尾部添加
#cn99.com 源更新服務(wù)器（江蘇省常州市電信，推薦電信用戶使用，我自己是南方電信1M帶寬的用戶，更新速度平均有100K）：
deb http://Ubuntu.cn99.com/ubuntu/ gutsy main restricted universe multiverse
deb http://Ubuntu.cn99.com/ubuntu/ gutsy-security main restricted universe multiverse
deb http://Ubuntu.cn99.com/ubuntu/ gutsy-updates main restricted universe multiverse
deb http://Ubuntu.cn99.com/ubuntu/ gutsy-proposed main restricted universe multiverse
deb http://Ubuntu.cn99.com/ubuntu/ gutsy-backports main restricted universe multiverse
deb-src http://Ubuntu.cn99.com/ubuntu/ gutsy main restricted universe multiverse
deb-src http://Ubuntu.cn99.com/ubuntu/ gutsy-security main restricted universe multiverse
deb-src http://Ubuntu.cn99.com/ubuntu/ gutsy-updates main restricted universe multiverse
deb-src http://Ubuntu.cn99.com/ubuntu/ gutsy-proposed main restricted universe multiverse
deb-src http://Ubuntu.cn99.com/ubuntu/ gutsy-backports main restricted universe multiverse
#Mirror.lupaworld.com 源更新服務(wù)器（浙江省杭州市雙線服務(wù)器，網(wǎng)通同電信都可以用，亞洲地區(qū)官方更新服務(wù)器）：
deb http://mirror.lupaworld.com/Ubuntu gutsy main restricted universe multiverse
deb http://mirror.lupaworld.com/Ubuntu gutsy-security main restricted universe multiverse
deb http://mirror.lupaworld.com/Ubuntu gutsy-updates main restricted universe multiverse
deb http://mirror.lupaworld.com/Ubuntu gutsy-backports main restricted universe multiverse
deb-src http://mirror.lupaworld.com/Ubuntu gutsy main restricted universe multiverse
deb-src http://mirror.lupaworld.com/Ubuntu gutsy-security main restricted universe multiverse
deb-src http://mirror.lupaworld.com/Ubuntu gutsy-updates main restricted universe multiverse
deb-src http://mirror.lupaworld.com/Ubuntu gutsy-backports main restricted universe multiverse
Ubuntu 官方源推薦北方網(wǎng)通用戶添加
deb http://archive.Ubuntu.com/ubuntu/ gutsy main restricted universe multiverse
deb http://archive.Ubuntu.com/ubuntu/ gutsy-security main restricted universe multiverse
deb http://archive.Ubuntu.com/ubuntu/ gutsy-updates main restricted universe multiverse
deb http://archive.Ubuntu.com/ubuntu/ gutsy-proposed main restricted universe multiverse
deb http://archive.Ubuntu.com/ubuntu/ gutsy-backports main restricted universe multiverse
deb-src http://archive.Ubuntu.com/ubuntu/ gutsy main restricted universe multiverse
deb-src http://archive.Ubuntu.com/ubuntu/ gutsy-security main restricted universe multiverse
deb-src http://archive.Ubuntu.com/ubuntu/ gutsy-updates main restricted universe multiverse
deb-src http://archive.Ubuntu.com/ubuntu/ gutsy-proposed main restricted universe multiverse
deb-src http://archive.Ubuntu.com/ubuntu/ gutsy-backports main restricted universe multiverse
臺灣的官方源速度也相當(dāng)不錯(cuò)，有時(shí)甚至快于內(nèi)陸的：
deb http://tw.archive.Ubuntu.com/ubuntu gutsy main restricted universe multiverse
deb http://tw.archive.Ubuntu.com/ubuntu gutsy-security main restricted universe multiverse
deb http://tw.archive.Ubuntu.com/ubuntu gutsy-updates main restricted universe multiverse
deb http://tw.archive.Ubuntu.com/ubuntu gutsy-backports main restricted universe multiverse
deb http://tw.archive.Ubuntu.com/ubuntu gutsy-proposed main restricted universe multiverse
deb-src http://tw.archive.Ubuntu.com/ubuntu gutsy main restricted universe multiverse
deb-src http://tw.archive.Ubuntu.com/ubuntu gutsy-security main restricted universe multiverse
deb-src http://tw.archive.Ubuntu.com/ubuntu gutsy-updates main restricted universe multiverse
deb-src http://tw.archive.Ubuntu.com/ubuntu gutsy-backports main restricted universe multiverse
deb-src http://tw.archive.Ubuntu.com/ubuntu gutsy-proposed main restricted universe multiverse
防止非官方源中軟件包不全的問題，請?jiān)趕ources.list文件中尾部添加下面這個(gè)官方源。
deb http://archive.Ubuntu.org.cn/ubuntu-cn/ feisty main restricted universe multiverse
如果沒有這個(gè)源，下面安裝某些軟件的時(shí)候會提示找不到，比如w32codecs
然后 保存編輯好的文件，執(zhí)行以下命令更新。
sudo apt-get update #這一步是更新你的源列表，換源後必須執(zhí)行
（如果更新速度非常慢請更換源 sudo gedit /etc/apt/sources.list ）
sudo apt-get dist-upgrade #這一步是更新軟件
更新完軟件后，再繼續(xù)設(shè)置吧。
有時(shí)你可能需要使用:sudo apt-get -f install 修復(fù)安裝
因?yàn)榻?jīng)常會用到終端：所以把終端加到右鍵菜單：
sudo apt-get install nautilus-open-terminal
這就終端就在右鍵菜單了可以了！！
有必要學(xué)會以root權(quán)限打開文件夾
sudo apt-get install nautilus-gksu
這樣右鍵單擊文件或文件夾，選擇以管理員打開?。?！
查看隱藏文件是：Ctrl+ H
deb http://ubuntu.uestc.edu.cn/ubuntu/ intrepid main multiverse restricted universe
deb http://ubuntu.uestc.edu.cn/ubuntu/ intrepid-backports main multiverse restricted universe
deb http://ubuntu.uestc.edu.cn/ubuntu/ intrepid-proposed main multiverse restricted universe
deb http://ubuntu.uestc.edu.cn/ubuntu/ intrepid-security main multiverse restricted universe
deb http://ubuntu.uestc.edu.cn/ubuntu/ intrepid-updates main multiverse restricted universe
deb-src http://ubuntu.uestc.edu.cn/ubuntu/ intrepid main multiverse restricted universe
deb-src http://ubuntu.uestc.edu.cn/ubuntu/ intrepid-backports main multiverse restricted universe
deb-src http://ubuntu.uestc.edu.cn/ubuntu/ intrepid-proposed main multiverse restricted universe
deb-src http://ubuntu.uestc.edu.cn/ubuntu/ intrepid-security main multiverse restricted universe
deb-src http://ubuntu.uestc.edu.cn/ubuntu/ intrepid-updates main multiverse restricted universe
