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Showing posts from November, 2011

[Level 2] MySQL security check with tcpdump.

you can check if MySQL data streams are encrypted or not by the following command: # tcpdump -l -i eth0 -w - src or dst port 3306 | strings Wish this helps. regards, Stanley Huang

[Level 3] Pythonbrew, the Python environment management tool.

The more info, please click here The Chinese resource from OpenFoundry, click here . Wish this helps. regards, Stanley Huang

[Level 3] Slides from Devoxx talk on Language / Library / VM Co-Evolution.

Slides from Devoxx talk on Language / Library / VM Co-Evolution, more info, please click here . Wish this helps. regards, Stanley Huang

[Level 3] The bonding info of Linux

The bonding info of Linux, click here for more detail. Wish this helps. regards, Stanley Huang

[Level 2] Pydoc, the document of Python.

In Java, we have javadoc to generate the document, in Python, we have pydoc. More info, please click here . The sample of pydoc as the following: The source code of testPyDoc.py #!/usr/bin/python """ This is a sample module to generate pydoc """ __author__ = 'Stanley Huang' __version__= '1.0' class PyDoc: """class docstrings""" def __init__ (self, user='guest', addr='Taipei'): """Set default attribute values only Keyword arguments: user -- name of user addr -- addr of user """ self.user = user self.addr = addr $ pydoc testPydoc Help on module testPyDoc: NAME testPyDoc - This is a sample module to generate pydoc FILE /tmp/testPyDoc.py CLASSES PyDoc class PyDoc | class docstrings | | Methods defined here: | | __init__(self, user='gues

[Level 3] How to implement AES in Python.

A paper for how to implement AES in Python. Please click here . Another paper is here . Wish this helps. regards, Stanley Huang

[Level 3] IoC/AOP in Python.

More Ioc info, please refer to here . More AOP info, please refer to here . Wish this helps. regards, Stanley Huang

[Level 2] How to update Ubuntu boot menu (grub).

If you want to modify grub menu of Ubuntu, you have following steps to do: 1. Modify default grub configuration file. # vi /etc/default/grub 2. Update grub configuration. # update-grub Generating grub.cfg ... Found linux image: /boot/vmlinuz-2.6.38-12-generic Found initrd image: /boot/initrd.img-2.6.38-12-generic Found linux image: /boot/vmlinuz-2.6.38-8-generic Found initrd image: /boot/initrd.img-2.6.38-8-generic Found memtest86+ image: /boot/memtest86+.bin Found Windows Recovery Environment (loader) on /dev/sda1 Found Windows 7 (loader) on /dev/sda2 done # More info. please refer to here . Wish this helps. regards, Stanley Huang

[Level 2] classmethod, staticmethod, abstractmethod decorators in Python.

#!/bin/env python from abc import * class p(object): __metaclass__ = ABCMeta @abstractmethod def printz(self): pass @abstractproperty def x(self): pass class o(p): def __init__(self, n=10): self._x = n def printX(self): print self._x def printx(self): print self.x @classmethod def printy(self): print self.x @staticmethod def printz(): print 'x' @property def x(self): return self._x @x.setter def x(self, times): self._x = self._x * times @x.getter def x(self): return self._x a = o(2) a.x = 5 print a.x a.printX() a.printx() a.printy() a.printz() #o.printX() # error #o.printx() # error o.printy() o.printz() $ ./t.py 10 10 10 <property object at 0x177a1b0> x <property object at 0x177a1b0> x Wish this helps. regards, Stanley Huang

[Level 1] Login server console with minicom on Ubuntu laptop.

If you want to use console to login server on Ubuntu laptop, you could try a useful app named "minicom". And you could download in by apt-get. # apt-get -y install minicom Wish this helps. regards, Stanley Huang