| # Summary | |
| A few notes I took to see if I could use MacOS as Hypevirsor in a similar fashion to Linux | |
| I wanted to see how few addons were needed instead of using Parallels, Virtual Box, VM Fsion etc. | |
| The idea is to use QEMU, Hypervisor Framework (https://developer.apple.com/documentation/hypervisor) and some custom host networking. | |
| # Installations | |
| brew install qemu (For controlling Hypervisor Framework) | |
| brew install cdrtools (For making cloud init iso's) | |
| http://tuntaposx.sourceforge.net/download.xhtml (For customer tap based networking) |
| ## This Script is intended to be used for Querying remaining time and resetting Terminal Server (RDS) Grace Licensing Period to Default 120 Days. | |
| ## Developed by Prakash Kumar (prakash82x@gmail.com) May 28th 2016 | |
| ## www.adminthing.blogspot.com | |
| ## Disclaimer: Please test this script in your test environment before executing on any production server. | |
| ## Author will not be responsible for any misuse/damage caused by using it. | |
| Clear-Host | |
| $ErrorActionPreference = "SilentlyContinue" | |
| ## Display current Status of remaining days from Grace period. |
这是一个用树莓派做Bitcoin Unlimited全节点的示例。对于没用使用过全节点钱包，也不熟悉命令行操作的朋友，建议先看这篇教程，尝试在PC或Mac上安装和同步区块链，这样更容易理解这个示例。
树莓派体积小，耗电小，无噪音，非常适合24小时工作。比特币节点对系统性能要求不高，专门24小时开着一台电脑，耗电和噪音都是很不环保的，且性能有极大的浪费。树莓派耗电仅和手机充电器相当，也没有风扇。你甚至不需要为树莓派安排地方，随便塞在哪里就行了，操作可以在其他的电脑上，通过SSH进行。用树莓派搭建节点，也可以学习到基本的Linux系统操作知识。搭建节点之后，树莓派上可以继续搭建其他服务，比如做个人云盘，BT挂机下载等等。
需要准备如下几样东西。此例使用树莓派3B，这版有1GB内存，也有wifi，性能是目前树莓派家族最好的。512MB内存的树莓派2或者zero也是可以用的。清单如下：
| /* MIT License | |
| * | |
| * Copyright (c) 2017 Roland Singer [roland.singer@desertbit.com] | |
| * | |
| * Permission is hereby granted, free of charge, to any person obtaining a copy | |
| * of this software and associated documentation files (the "Software"), to deal | |
| * in the Software without restriction, including without limitation the rights | |
| * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | |
| * copies of the Software, and to permit persons to whom the Software is | |
| * furnished to do so, subject to the following conditions: |
| package main | |
| import ( | |
| "io" | |
| "log" | |
| "net" | |
| "os" | |
| ) | |
| const ( |
| #!/bin/sh | |
| # | |
| # Installs Python 2.7.9 on Ubuntu 14.04 to include security updates | |
| # Run this script with superuser privileges. | |
| # | |
| BASEDEPS="build-essential python-pip" | |
| BUILDDEPS="libbz2-dev \ | |
| libc6-dev \ | |
| libgdbm-dev \ |
| SWIG/_m2crypto.i:30: Error: Unable to find 'openssl/opensslv.h' | |
| SWIG/_m2crypto.i:33: Error: Unable to find 'openssl/safestack.h' | |
| SWIG/_evp.i:12: Error: Unable to find 'openssl/opensslconf.h' | |
| SWIG/_ec.i:7: Error: Unable to find 'openssl/opensslconf.h' | |
| error: command 'swig' failed with exit status 1 |
# Key considerations for algorithm "RSA" ≥ 2048-bit
openssl genrsa -out server.key 2048
# Key considerations for algorithm "ECDSA" ≥ secp384r1
# List ECDSA the supported curves (openssl ecparam -list_curves)
| # Download and Install the Latest Updates for the OS | |
| apt-get update && apt-get upgrade -y | |
| # Set the Server Timezone to CST | |
| echo "America/Chicago" > /etc/timezone | |
| dpkg-reconfigure -f noninteractive tzdata | |
| # Enable Ubuntu Firewall and allow SSH & MySQL Ports | |
| ufw enable | |
| ufw allow 22 |