zqhong zqhong

tmux shortcuts & cheatsheet

start new:

tmux

start new with session name:

tmux new -s myname

Here are a list of headless browsers that I know about:

[HtmlUnit][1] - Java. Custom browser engine. JavaScript support/DOM emulated. Open source.
[Ghost][2] - Python only. WebKit-based. Full JavaScript support. Open source.
[Twill][3] - Python/command line. Custom browser engine. No JavaScript. Open source.
[PhantomJS][4] - Command line/all platforms. WebKit-based. Full JavaScript support. Open source.
[Awesomium][5] - C++/.Net/all platforms. Chromium-based. Full JavaScript support. Commercial/free.
[SimpleBrowser][6] - .Net 4/C#. Custom browser engine. No JavaScript support. Open source.
[ZombieJS][7] - Node.js. Custom browser engine. JavaScript support/emulated DOM. Open source.
[EnvJS][8] - JavaScript via Java/Rhino. Custom browser engine. JavaScript support/emulated DOM. Open source.

Git 协作流程

master 分支

master 永远处于稳定状态，这个分支代码可以随时用来部署。不允许在该分支直接提交代码。

develop 分支

开发分支，包含了项目最新的功能和代码，所有开发都在 develop 上进行。一般情况下小的修改直接在这个分支上提交代码。

Basics

Creating a new PHPExcel Object.

    $this->PHPExcel = new PHPExcel();

Working with sheets

Creating a new sheet:

SQL to MongoDB Mapping Chart

SQL to MongoDB Mapping Chart¶

In addition to the charts that follow, you might want to consider the Frequently Asked Questions section for a selection of common questions about MongoDB.

Executables¶

The following table presents the MySQL/Oracle executables and the corresponding MongoDB executables.

The Ultimate Git Alias Setup

If you use git on the command-line, you'll eventually find yourself wanting aliases for your most commonly-used commands. It's incredibly useful to be able to explore your repos with only a few keystrokes that eventually get hardcoded into muscle memory.

Some people don't add aliases because they don't want to have to adjust to not having them on a remote server. Personally, I find that having aliases doesn't mean I that forget the underlying commands, and aliases provide such a massive improvement to my workflow that it would be crazy not to have them.

The simplest way to add an alias for a specific git command is to use a standard bash alias.

# .bashrc

	# 在本地服务器建立 rubygems.org 的镜像缓存，以提高 gem 的安装速度
	# 此配置设置缓存过期为1天，也就是说，新上的 gem 无法马上安装
	# 做这个起什么作用？
	# rubygems 的很多资源文件是存放到 Amazon S3 上面的，由于 GFW 对某些 S3 服务器又连接重置或丢包，导致 gem 安装异常缓慢或有时候根本无法连接安装。
	# 而通过这种跳板的方式可以很好的解决这个问题，当然前提是 Nginx反向代理服务器需要在国外

	proxy_cache_path /var/cache/rubygems levels=1:2 keys_zone=RUBYGEMS:10m
	inactive=24h max_size=1g;
	server {
	listen 80;


	#
	# Slightly tighter CORS config for nginx
	#
	# A modification of https://gist.github.com/1064640/ to include a white-list of URLs
	#
	# Despite the W3C guidance suggesting that a list of origins can be passed as part of
	# Access-Control-Allow-Origin headers, several browsers (well, at least Firefox)
	# don't seem to play nicely with this.
	#

	<?php
	/*
	OCP - Opcache Control Panel (aka Zend Optimizer+ Control Panel for PHP)
	Author: _ck_ (with contributions by GK, stasilok)
	Version: 0.1.7
	Free for any kind of use or modification, I am not responsible for anything, please share your improvements

	* revision history
	0.1.7 2015-09-01 regex fix for PHP7 phpinfo
	0.1.6 2013-04-12 moved meta to footer so graphs can be higher and reduce clutter