Ubuntu安装

Linux

查看当前Ubuntu版本

$ cat /etc/issue
    $ lsb_release -a

其他查看版本的方法，请参考：http://blog.csdn.net/way_ping_li/article/details/8293358

设置Proxy

1.修改配置文件

vim /etc/profile

 
在尾行添加：

export http_proxy=http://109.105.113.200:8080

 
使生效

$ source /etc/profile

2.修改网卡配置

sudo vi /etc/network/interfaces

添加

auto eth0 # 或 eno1 Ubuntu 16.0修改
iface eth0 inet static
address 109.105.118.19
gateway 109.105.118.1
netmask 255.255.255.0
dns-nameservers 203.241.132.34

 
重启网卡

$ sudo /etc/init.d/networking restart

查看ip

$ ifconfig 

3.测试网络

$ ping 109.105.112.1

apt-get源配置

$ sudo vi /etc/apt/sources.list

替换源字串

http://mirrors.163.com/ubuntu
http://mirrors.sohu.com/ubuntu

ref : http://mirrors.163.com/.help/ubuntu.html

Ubuntu 14.04.5

deb http://mirrors.163.com/ubuntu/ trusty-security main restricted universe multiverse
deb http://mirrors.163.com/ubuntu/ trusty-updates main restricted universe multiverse
deb http://mirrors.163.com/ubuntu/ trusty-proposed main restricted universe multiverse
deb http://mirrors.163.com/ubuntu/ trusty-backports main restricted universe multiverse
deb-src http://mirrors.163.com/ubuntu/ trusty main restricted universe multiverse
deb-src http://mirrors.163.com/ubuntu/ trusty-security main restricted universe multiverse
deb-src http://mirrors.163.com/ubuntu/ trusty-updates main restricted universe multiverse
deb-src http://mirrors.163.com/ubuntu/ trusty-proposed main restricted universe multiverse
deb-src http://mirrors.163.com/ubuntu/ trusty-backports main restricted universe multiverse

快速换源更新到Ubuntu 15.04的方法，执行：

$ sudo sed -i ‘s/utopic/vivid/’ /etc/apt/sources.list
	$ sudo apt-get update
$ sudo apt-get dist-upgrade

需要修改版本代号"utopic" -> "vivid"

sudo继承当前环境变量

$ sudo visudo

修改如下：

ssh服务

安装ssh-server

$ sudo apt-get install openssh-server

安装ssh-client

$ sudo apt-get install openssh-client 

确认sshserver是否安装好

$ ps -e | grep sshd

创建用户

$ sudo useradd -m -s /bin/bash username
	$ sudo passwd username

添加sudo权限

$ su
	$ vim /etc/sudoers