玩轉 Ubuntu

玩轉 Ubuntu

ubuntu步驟：
1. 修改root密碼sudo passwd root
2. 新建用戶組，sudo addgroup work
3. 新建普通用戶，並加入sudoers

sudo adduser --group work samdyli
vi /etc/sudoers 
# 增加下面內容
# add by samdyli no password operate all command
%work ALL=(ALL) NOPASSWD:ALL
source /etc/sudoers

1. 更改源
   a. 備份源

cp /etc/apt/sources.list /etc/apt/sources.list.bak

b.更改源

# 中科大
deb http://mirrors.ustc.edu.cn/ubuntu/ precise-updates main restricted
deb-src http://mirrors.ustc.edu.cn/ubuntu/ precise-updates main restricted
deb http://mirrors.ustc.edu.cn/ubuntu/ precise universe
deb-src http://mirrors.ustc.edu.cn/ubuntu/ precise universe
deb http://mirrors.ustc.edu.cn/ubuntu/ precise-updates universe
deb-src http://mirrors.ustc.edu.cn/ubuntu/ precise-updates universe
deb http://mirrors.ustc.edu.cn/ubuntu/ precise multiverse
deb-src http://mirrors.ustc.edu.cn/ubuntu/ precise multiverse
deb http://mirrors.ustc.edu.cn/ubuntu/ precise-updates multiverse
deb-src http://mirrors.ustc.edu.cn/ubuntu/ precise-updates multiverse
deb http://mirrors.ustc.edu.cn/ubuntu/ precise-backports main restricted universe multiverse
deb-src http://mirrors.ustc.edu.cn/ubuntu/ precise-backports main restricted universe multiverse
# 搜狐源：
deb http://mirrors.sohu.com/ubuntu/ precise-updates main restricted
deb-src http://mirrors.sohu.com/ubuntu/ precise-updates main restricted
deb http://mirrors.sohu.com/ubuntu/ precise universe
deb-src http://mirrors.sohu.com/ubuntu/ precise universe
deb http://mirrors.sohu.com/ubuntu/ precise-updates universe
deb-src http://mirrors.sohu.com/ubuntu/ precise-updates universe
deb http://mirrors.sohu.com/ubuntu/ precise multiverse
deb-src http://mirrors.sohu.com/ubuntu/ precise multiverse
deb http://mirrors.sohu.com/ubuntu/ precise-updates multiverse
deb-src http://mirrors.sohu.com/ubuntu/ precise-updates multiverse
deb http://mirrors.sohu.com/ubuntu/ precise-backports main restricted universe multiverse
deb-src http://mirrors.sohu.com/ubuntu/ precise-backports main restricted universe multiverse
# 網易源：
deb http://mirrors.163.com/ubuntu/ precise-updates main restricted
deb-src http://mirrors.163.com/ubuntu/ precise-updates main restricted
deb http://mirrors.163.com/ubuntu/ precise universe
deb-src http://mirrors.163.com/ubuntu/ precise universe
deb http://mirrors.163.com/ubuntu/ precise-updates universe
deb-src http://mirrors.163.com/ubuntu/ precise-updates universe
deb http://mirrors.163.com/ubuntu/ precise multiverse
deb-src http://mirrors.163.com/ubuntu/ precise multiverse
deb http://mirrors.163.com/ubuntu/ precise-updates multiverse
deb-src http://mirrors.163.com/ubuntu/ precise-updates multiverse
deb http://mirrors.163.com/ubuntu/ precise-backports main restricted universe multiverse
deb-src http://mirrors.163.com/ubuntu/ precise-backports main restricted universe multiverse

c. 更新源
sudo apt-get update
4. 安裝vim sudo apt-get install vim-gnome
5. 安裝chrome
a. 如果你還沒有安裝Chrome：
wget -q -O - https://dl-ssl.google.com/linux/linux_signing_key.pub | sudo apt-key add -
（如果無法下載，請替換爲http://mirror.b0.upaiyun.com/dl.google.com/linux/linux_signing_key.pub）
b. deb http://mirror.b0.upaiyun.com/dl.google.com/linux/chrome/deb/ stable main
c. 安裝：sudo apt-get install
google-chrome-unstable google-chrome-beta google-chrome-stable google-chrome-unstable google-chrome-beta
d. 如果已經安裝：請替換/etc/apt/sources.list.d/google.list（或類似名字）中
http://dl.google.com/linux/chrome/deb/爲http://mirror.b0.upaiyun.com/dl.google.com/linux/chrome/deb/
6. 設置chrome代理或者pac
圖形界面無法設置代理只能通過命令行去啓動，設置代理請使用google-chrome --proxy-server="https://proxy.com/ss"，設置pca請使用google-chrome -proxy-pca-url="http://sfsdf.com"也可以加入alias(“` alias google-chrome=google-chrome -proxy-pca-url=”http://sfsdf.com”

[問題]：

1. 不小心弄壞/etc/sudoers文件，沒有修改root密碼。所有命令不能使用。
   解決方法：進入ubuntu的recovery模式，選擇root，以root的身份進入命令行。