LIST:
UbuntuSkill:
http://wiki.ubuntu.org.cn/UbuntuSkills
命令行指南：
http://wiki.ubuntu.org.cn/%E5%91%BD%E4%BB%A4%E8%A1%8C%E6%8C%87%E5%8D%97
rute:
http://rute.2038bug.com/index.html.gz
launch program in gnome
http://www.watchingthenet.com/ubuntu-tip-how-to-launch-programs-in-the-background-from-a-terminal-window.html
Rails On Ubuntu
http://ryanbigg.com/2010/12/ubuntu-ruby-rvm-rails-and-you/
ruby-shell-commands
http://tech.natemurray.com/2007/03/ruby-shell-commands.html
http://stackoverflow.com/questions/166347/how-do-i-use-ruby-for-shell-scripting