王斌的Blog

假设我有两个表（model），分别叫useraccount和userrole：
class UserAccount(meta.Model):
person  = meta.ForeignKey(Person, core=True)
account = meta.ForeignKey(User,   core=True)
class UserRole(meta.Model):
...

在水木的python版看到这样一个题目，很多人给出了很多方法，其中有两个很pythonic，而且比较通用，作为一个小trick记下来:
一种方法是用itertools里的chain方法，chain的作用是将多个迭代组...

参考了这几篇文章：Emacs23安装配置慢慢来、EmacsCvsAndDebian、Emacs CVS on Debian、HOWTO: Install GNU Emacs with antialiasing，在debian sid上安装了emacs23,把安装的步骤写一下：
1. 准备工作，要安装ssh和tex...

move to the place of first space, M+\, done :p

I just find this article aptitude versus apt-get , as it said, aptitude will remove dependencies when you remove a package, apt-get not.

For example I want to start gedit, but i want to check whether it is running already
pidof gedit > /dev/null || gedit &

debian repositories:
deb http://deb.opera.com/opera/ unstable non-free
ubuntu repositories:
deb http://archive.canonical.com/ubuntu dapper-commercial main