#Mirror.lupaworld.com 源更新伺服器（浙江省杭州市雙線伺服器，網通同電信都可以用，亞洲地區官方更新伺服器）：

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

deb-src http://mirror.lupaworld.com/Ubuntu gutsy-backports main restricted universe multiverse

Ubuntu 官方源 推薦北方網通使用者新增

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不錯，有時甚至快於內地的：

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

防止非官方源中軟體包不全的問題，請在sources.list檔案中尾部新增下面這個官方源。

deb http://archive.Ubuntu.org.cn/ubuntu-cn/ feisty main restricted universe multiverse

如果沒有這個源，下面安裝某些軟體的時候會提示找不到，比如w32codecs

 然後 儲存編輯好的檔案，執行以下命令更新。

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   #這一步是更新軟體

更新完軟體後，再繼續設定吧。

有時你可能需要使用:sudo apt-get -f install 修復安裝

因為經常會用到終端：所以把終端加到右鍵選單：

sudo apt-get install nautilus-open-terminal

這就終端就在右鍵選單了可以了！！

有必要學會以root許可權開啟資料夾

sudo apt-get install nautilus-gksu

這樣右鍵單擊檔案或資料夾，選擇以管理員開啟！！！

檢視隱藏檔案是：Ctrl+ H