Summarize some Ubuntu Problems
1. Ubuntu supports the installation of Multimedia Player Plug-ins (required after the new system is installed)
Ubuntu-restricted-extras package
Allows users to install ability to play popular non-free media formats, including DVD, MP3, QuickTime, and Windows Media formats.
sudo apt-get install ubuntu-restricted-extras
2. virtualbox is not currently allowed to access USB devices. You can change this by adding your user to the 'vboxusers' group. Please see the user manual for a more detailed explanation.
sudo usermod -aG vboxusers username
Username is the name of your logon system. After the username is added, it must be restarted to take effect.
3. Install Lamp
sudo apt-get install apache2 mysql-server mysql-client php5 php5-gd php5-mysql
4. Remove ^ m characters
T's caused by the DOS/Windows line-ending characters. Use dos2unix can solve the problem
sudo apt-get install dos2unix
5. Install wenquanyi zhenghei
sudo apt-get install ttf-wqy-zenhei