Lake Chan StoneMoe

Repair TimeMachine Backup

Mount timemachine volume from Finder.
Unlock Target Machine's Backup sparsebundle.
sudo chflags -R nouchg /Volumes/{TimeMachine Volume Name}/{Target Machine's Name}.sparsebundle
Attach sparsebundle then Listing Backup Volume.
hdiutil attach -nomount -noverify -noautofsck /Volumes/{TimeMachine Volume Name}/{Target Machine's Name}.sparsebundle
Repair backup volume.
fsck_hfs -drfy /dev/disk2s2
Detach backup sparsebundle.

朴素VPN：一个纯内核级静态隧道

由于路由管控系统的建立，实时动态黑洞路由已成为最有效的封锁手段，TCP连接重置和DNS污染成为次要手段，利用漏洞的穿墙方法已不再具有普遍意义。对此应对方法是多样化协议的VPN来抵抗识别。这里介绍一种太简单、有时很朴素的“穷人VPN”。

朴素VPN只需要一次内核配置（Linux内核），即可永久稳定运行，不需要任何用户态守护进程。所有流量转换和加密全部由内核完成，原生性能，开销几乎没有。静态配置，避免动态握手和参数协商产生指纹特征导致被识别。并且支持NAT，移动的内网用户可以使用此方法。支持广泛，基于L2TPv3标准，Linux内核3.2+都有支持，其他操作系统原则上也能支持。但有两个局限：需要root权限；一个隧道只支持一个用户。

朴素VPN利用UDP封装的静态L2TP隧道实现VPN，内核XFRM实现静态IPsec。实际上IP-in-IP隧道即可实现VPN，但是这种协议无法穿越NAT，因此必须利用UDP封装。内核3.18将支持Foo-over-UDP，在UDP里面直接封装IP，与静态的L2TP-over-UDP很类似。

创建一个朴素VPN

tmux cheat sheet

(C-x means ctrl+x, M-x means alt+x)

Prefix key

The default prefix is C-b. If you (or your muscle memory) prefer C-a, you need to add this to ~/.tmux.conf:

remap prefix to Control + a

Download docker-compose.yml to dir named sentry
Change SENTRY_SECRET_KEY to random 32 char string
Run docker-compose up -d
Run docker-compose exec sentry sentry upgrade to setup database and create admin user
(Optional) Run docker-compose exec sentry pip install sentry-slack if you want slack plugin, it can be done later
Run docker-compose restart sentry
Sentry is now running on public port 9000

https://docs.docker.com/compose/compose-file/#env_file

	// Credit to damien_oconnell from http://forum.unity3d.com/threads/39513-Click-drag-camera-movement
	// for using the mouse displacement for calculating the amount of camera movement and panning code.

	using UnityEngine;
	using System.Collections;

	public class MoveCamera : MonoBehaviour
	{
	//
	// VARIABLES

	function ocr() {
	var image = document.querySelector("#myimg6"); // 取验证码
	var canvas = document.createElement('canvas');
	var ctx = canvas.getContext("2d");
	var numbers = [ //0-9和a-z的明暗值
	"0",
	"0",
	"1100001111100000011110011000110011110011111111001111111001111111001111111001111111001111111001111111000000001100000000011111111111111111111111111111111111111111",
	"1100001111000000011100111100111111110011111110001111000001111100000111111110001111111100111111110011000000011110000011111111111111111111111111111111111111111111",
	"1111000111111100011111100001111111100111110010011110011001110011100111000000001100000000111111100111111000001111100000011111111111111111111111111111111111111111",

	[program:myapp]
	autostart = true
	autorestart = true
	command = python /home/pi/myapp.py
	environment=SECRET_ID="secret_id",SECRET_KEY="secret_key_avoiding_%_chars"
	stdout_logfile = /home/pi/stdout.log
	stderr_logfile = /home/pi/stderr.log
	startretries = 3
	user = pi

	#!/usr/bin/python
	bpf_text = """
	#include <linux/ptrace.h>
	#include <linux/sched.h> /* For TASK_COMM_LEN */
	#include <linux/icmp.h>
	#include <linux/netdevice.h>
	struct probe_icmp_data_t
	{
	u64 timestamp_ns;
	u32 tgid;

	"""
	Simple preforking echo server in Python.

	Python port of http://tomayko.com/writings/unicorn-is-unix.
	"""

	import os
	import sys
	import socket