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# http://stackoverflow.com/a/707001/668223
import os
from subprocess import Popen, PIPE

process = Popen(["ls", "-la", "."], stdout=PIPE)
exit_code = os.waitpid(process.pid, 0)
output = process.communicate()[0]

# 更好的做法应该是
# http://docs.python.org/2/library/subprocess.html

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def start_thread_wrapper(target_func,name='thread-', thread_number=1,daemon=True, args=()):
    assert target_func != None and hasattr(target_func, '__call__')
    for i in xrange(thread_number):
        t = threading.Thread(target=target_func,name=name+str(i), args=args)
        t.daemon = daemon
        t.start()

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adb shell screencap -p | sed 's/\r$//' > screen.png

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#Credit: http://stackoverflow.com/a/4642213/668223

FILE=test

while read CMD; do
    echo "$CMD"
done < "$FILE"

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class QueueItem:
    def __init__(self, data):
        self.data = data
        self.next = None
    def __repr__(self):
        string = "Data: {}".format(str(self.data))
        return string
        
class LinkedQueue:
    def __init__(self):

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import logging

class Stack:
    def __init__(self):
        self.__space = []
        self.cur = -1
    def pop(self):
        if self.cur == -1:
            logging.warn("pop an empty stack")
            return None

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#credit:http://www.cyberciti.biz/faq/bash-csh-sh-check-and-file-file-size/

stat -c %s $file

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make_ext4fs -l 512M -s -a system system.img ./system

• -l partition size
• -s sparse mode 压缩模式，将image文件压缩
• -a system mount point make_ext4fs会根据private/android_filesystem_config.h里定义好的权限来给文件夹里的所有文件重新设置权限
• ./system file directory

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function exist() {
    if [ ! -z $1 ];then
        if ls $1 &>/dev/null;then
            echo 0
            return 0
        fi
    fi
    echo 1
    return 1
}

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#!/usr/bin/python
#-*- encoding:utf-8 -*-

class ClassTest:
    FOO = 'foo'
    __bar = 'secret!'
    def __init__(self, **args):
        self.__dict = {}
        self.__dict[ClassTest.FOO] = args[ClassTest.FOO]
        self.fill_dict(ClassTest.FOO, **args)