ubuntu

sudo apt-get install ruby irb ri rdoc ruby1.8-dev2.2
sudo apt-get install rubygems
sudo gem update --systemNow
sudo gem install rails --include-dependencies
rails name_of_app
sudo gem uninstall rails
sudo apt-get remove rubygems ruby irb ri rdoc ruby1.8-dev

 

sudo passwd
sudo apt-get remove
ifconfig
sudo apt-get install unrar
sudo apt-get install mysql-server
sudo apt-get install mysql-client-5.0
sudo apt-get install fcitx

 

ar x abc.deb 解压deb文件