starsea

Mac OSX 內建防火牆 PF 使用筆記]

你知道 Mac 本身也有內建防火牆嗎？
我指的不是 System Preferences 裡面有的防火牆（那個屬於 Application Firewall 指定程式進出的），而是可以像 linux iptables 可以設定規則的防火牆。

它叫做 Packet filter 簡稱 PF，因為 Mac OSX 屬於 BSD 系列的系統
自從 10.7 (Lion) 之後就有內建 PF（在這之前是 IPFW），只是預設是關閉的。

官方文件寫的非常少，大部分要參考 FreeBSD 的文件或者 OpenBSD 的文件，
大部分這二者看到的文件跟語法大多都支援。

Set New Tab background in Google Chrome

Install new-tab-background.user.js UserScript into your Tampermonkey
Edit the UserScript header

Set up top-level domain of your country (change .hu to your country's TLD)
Change the file:///full/path/of/background.jpg example background URL to your desired URL (if you want to use local resource - `file://`` you have to enable "Allow access to file URLs" right for Tampermonkey)

Check my toolchain what can download & set random wallpaper from Google Image search on Xfce4

read this first: https://www.webkit.org/blog/3476/content-blockers-first-look/
start by adding a new extension target to your iOS app of type “content blocker”
launch the app using the main target’s scheme + a call to SFContentBlockerManager.reloadContentBlockerWithIdentifier() with the extension’s id in application:didFinishLaunchingWithOptions: to auto-reload the blocker in development mode
if you don’t call reloadContentBlockerWithIdentifier() then you need to switch the blocker off and on again in the Safari settings (stop the app in Xcode if the switch is not moving)
use inspector from desktop Safari to inspect the Safari in the simulator in order to find specific things to block
things like periods in the url-filter regexp need to be escaped with double backslashes, e.g. facebook\\.net
if you use if-domain, it needs to be an array, even for one element
domain foo.com might not match www.foo.com even though I think it’s supposed to (UPDATE: They've changed it in one of

Project Title

One Paragraph of project description goes here

Getting Started

These instructions will get you a copy of the project up and running on your local machine for development and testing purposes. See deployment for notes on how to deploy the project on a live system.

Prerequisites

##PHP 5.4新特性##

掌握

traits
trait的引入，可以扩展class的内容，使class在某种形式上实现了多重继承，更加灵活，trait不能被实例化示例代码：
```
<?php
```

trait Hello {

	function run() {
	const MediaRemote = $.NSBundle.bundleWithPath('/System/Library/PrivateFrameworks/MediaRemote.framework/');
	MediaRemote.load

	const MRNowPlayingRequest = $.NSClassFromString('MRNowPlayingRequest');

	const appName = MRNowPlayingRequest.localNowPlayingPlayerPath.client.displayName;
	const infoDict = MRNowPlayingRequest.localNowPlayingItem.nowPlayingInfo;

	const title = infoDict.valueForKey('kMRMediaRemoteNowPlayingInfoTitle');

	package main

	import(
	"fmt"
	"time"
	)

	func NumberOfTheWeekInMonth(now time.Time) int {
	beginningOfTheMonth := time.Date(now.Year(), now.Month(), 1, 1, 1, 1, 1, time.UTC)
	_, thisWeek := now.ISOWeek()

	<?php
	$tel_no = $_GET['hm'];
	$c = $_GET['c']?$_GET['c']:0;
	$c++;
	?>
	<!DOCTYPE html>
	<html>
	<head>
	<title>迷你轰炸台 - 短信炸弹 - BETA!</title>
	<?php

	#!/bin/bash

	PHP_VERSION="5.5.0"

	yum -y install \
	curl-devel.x86_64 \
	libmcrypt-devel.x86_64 \
	libxml2-devel.x86_64 \
	libtool-ltdl-devel.x86_64 \
	pcre-devel.x86_64 \

	<?php
	/**
	* A helper file for Laravel 5, to provide autocomplete information to your IDE
	* Generated for Laravel 5.5.13 on 2017-09-28.
	*
	* @author Barry vd. Heuvel <[email protected]>
	* @see https://github.com/barryvdh/laravel-ide-helper
	*/
	namespace {
	exit("This file should not be included, only analyzed by your IDE");