when we install ubuntu 16.04 LTS, we need to do install typewriting first， eg sougou pinyin. after doing this, what need we do ?
1. delete libreoffice, because they are so slow.
sudo apt-get remove libreoffice-common
2.delete Amazon url
sudo apt-get remove unity-webapps-common
3.delete softwares less used
sudo apt-get remove thunderbird totem rhythmbox empathy brasero simple-scan gnome-mahjongg aisleriot gnome-mines cheese transmission-common gnome-orca webbrowser-app gnome-sudoku landscape-client-ui-install
4.intall vim and emacs
sudo apt-get install vim emacs
5.install git and vpnc
sudo apt-get install git vpnc
6. install lnav, we can see clear logs
sudo apt-get install lnav
7.intall unrar, because ubuntu cann't unrar data
sudo apt-get install unrar
we can use unrar x aaaa.rar unrar data on current file package
8.install htop， because htop is better than linux‘s top
sudo apt-get install htop， and use htop keyword
