Ubuntu下安装卸载deb包

摘自：http://hi.baidu.com/%C7%E5%D0%C4%D1%C5%C9%E1/blog/item/65c5a58fd94335edf01f3652.html

dpkg -i xxx.deb (安装xxx)
dpkg -l | grep xxx (查找xxx)
dpkg -r xxx (删除xxx)