然后就可以看到一个基于字符界面的配置界面，剩下都具体配置情况与在Windows进行拨号连接时的配置没什么两样。
设置好后，执行命令：ifconfig ppp0
如果没什么问题都话，应该可以接收到类似下面都信息：
ppp0 Link encap:Point-to-Point Protocol
inet addr:219.144.204.54 P-t-P:219.144.204.1 Mask:255.255.255.255
UP POINTOPOINT RUNNING NOARP MULTICAST MTU:1492 Metric:1
RX packets:4233 errors:0 dropped:0 overruns:0 frame:0
TX packets:4550 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:3
RX bytes:1927785 (1.8 MiB) TX bytes:498841 (487.1 KiB)
2.安装LumaQQ
First step:
sudo gedit /usr/share/applications/LumaQQ.desktop
second step:
====================
[Desktop Entry]
Name=LumaQQ
Comment=QQ Client
Exec=/opt/LumaQQ/lumaqq
Icon=/opt/LumaQQ/QQ.png
Terminal=false
Type=Application
Categories=Application;Network;
=====================
Save and Exit, drag the icon from /usr/share/applications/LumaQQ.desktop to desktop
3.设置root都password
在默认情况下root都password是置空的，而且无法在图形界面进行登录。使用命令：sudo passwd root
系统会提示两次输入密码，如果没什么问题都话就可以用su命令进行权限切换了。
4.安装FCITX输入法
Ubuntu都汉化事实上作的不是很好，而且没有默认中文输入法，所以得手动安装。由于网上大多输入法是rpm格式的，但是，Ubuntu并不支持这种格式都资源包，但是bz2应该是没问题的，在安装输入法之前，首先应该对/usr/share 和 /usr/bin目录进行授权。否则就无法成功安装。
启动FCITX输入法：fcitx
直接在命令行输入上面的命令就可以了，还可以用我们在Windows中常用都快捷键来进行中英文输入法切换！
5.linux上的作图工具
1）yEd - Java™ Graph Editor
yEd is a very powerful graph editor that is written entirely in the Java programming language. It can be used to quickly and effectively generate drawings and to apply automatic layouts to a range of different diagrams and networks.
yEd makes full use of the yFiles library. This is a Java class library enabling the viewing, editing, optimizing, drawing, and animating of a wide range of diagrams, networks, and other graph-like structures.
yEd has been built using 100% lightweight Swing components. This allows it to run on any platform where a suitable Runtime Environment is available.
http://www.yworks.com/en/products_yed_about.htm
2）Umbrello UML Modeller
Umbrello UML Modeller is a Unified Modelling Language diagram programme for KDE. UML allows you to create diagrams of software and other systems in a standard format. Our handbook gives a good introduction to Umbrello and UML modelling.
http://uml.sourceforge.net/index.php
如果是Ubuntu的话，可以直接执行如下命令从网上下载并自动进行安装： apt-get install umbrello