| #! /bin/sh | |
| # | |
| # Script to backup git repositories. | |
| # | |
| # For each subdirectory ending in .git: | |
| # - perform a git fetch from origin. | |
| # - perform a git push --all to all remotes other than origin. | |
| repos=`find * -type d -name \*.git` |
| # Claas Heuer, August 2015 | |
| # | |
| # urls: | |
| # http://stackoverflow.com/questions/847179/multiple-glibc-libraries-on-a-single-host | |
| # http://www.gnu.org/software/libc/download.html | |
| cd $HOME | |
| mkdir glibc_update | |
| cd glibc_update |
| // | |
| // File: fsevents_windows.go | |
| // Date: October 29, 2013 | |
| // Author: Peter Krnjevic <pkrnjevic@gmail.com>, on the shoulders of many others | |
| // | |
| // This code sample is released into the Public Domain. | |
| // | |
| package fsevents | |
| import ( |
| #define __MODULE__ "DHEXMPL" | |
| #define __IDENT__ "X.00-01" | |
| #ifdef __GNUC__ | |
| #ident __IDENT__ | |
| #endif | |
| #pragma GCC diagnostic ignored "-Wparentheses" | |
| #pragma GCC diagnostic ignored "-Wdiscarded-qualifiers" | |
| #pragma GCC diagnostic ignored "-Wmissing-braces" |
These are the steps I used to get Ubuntu ARM aarch64 running with QEMU on OSX.
Get Ubuntu Image and QEMU EFI:
wget https://cloud-images.ubuntu.com/releases/16.04/release/ubuntu-16.04-server-cloudimg-arm64-uefi1.img
wget https://releases.linaro.org/components/kernel/uefi-linaro/latest/release/qemu64/QEMU_EFI.fd
| package okhttp3; | |
| import java.io.IOException; | |
| import java.net.InetAddress; | |
| import java.net.InetSocketAddress; | |
| import java.net.Socket; | |
| import java.net.SocketAddress; | |
| import java.net.UnknownHostException; | |
| import java.util.Arrays; | |
| import java.util.LinkedHashMap; |
| import ( | |
| "archive/zip" | |
| "io" | |
| "os" | |
| "path/filepath" | |
| "strings" | |
| ) | |
| func zipit(source, target string) error { | |
| zipfile, err := os.Create(target) |
| # GPLv2+, by fcicq | |
| # from http://www.hpl.hp.com/techreports/98/HPL-98-135.pdf | |
| IRRED_COEFF = [ | |
| 4,3,1,5,3,1,4,3,1,7,3,2,5,4,3,5,3,2,7,4,2,4,3,1,10,9,3,9,4,2,7,6,2,10,9, | |
| 6,4,3,1,5,4,3,4,3,1,7,2,1,5,3,2,7,4,2,6,3,2,5,3,2,15,3,2,11,3,2,9,8,7,7, | |
| 2,1,5,3,2,9,3,1,7,3,1,9,8,3,9,4,2,8,5,3,15,14,10,10,5,2,9,6,2,9,3,2,9,5, | |
| 2,11,10,1,7,3,2,11,2,1,9,7,4,4,3,1,8,3,1,7,4,1,7,2,1,13,11,6,5,3,2,7,3,2, | |
| 8,7,5,12,3,2,13,10,6,5,3,2,5,3,2,9,5,2,9,7,2,13,4,3,4,3,1,11,6,4,18,9,6, | |
| 19,18,13,11,3,2,15,9,6,4,3,1,16,5,2,15,14,6,8,5,2,15,11,2,11,6,2,7,5,3,8, | |
| 3,1,19,16,9,11,9,6,15,7,6,13,4,3,14,13,3,13,6,3,9,5,2,19,13,6,19,10,3,11, |
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。
| // $ 6g echo.go && 6l -o echo echo.6 | |
| // $ ./echo | |
| // | |
| // ~ in another terminal ~ | |
| // | |
| // $ nc localhost 3540 | |
| package main | |
| import ( |