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Overview

This gist details how to create or restore a disk image in Mac OSX. There are three methods that are described: Carbon Copy Cloner, Disk Utility, and CommandLine.

• Disclaimer:
  • I have no financial incentives to https://bombich.com or Apple.
  • Always make a backup of your data, and make 2 separate backups before trying something new.
  • The following steps have been tested and are a summary of my personal recommendations, but should be used at your own risk.
  • If there is a chance of imminent data loss, contact a professional for assistance, and do not rely on a random person from the Internet for help.

Method 1: Carbon Copy Cloner (CCC)

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Creating Quizzes in Google Form using Google Forms Service with Google Apps Script

This is a sample script for creating quizzes in Google Form using Google Forms Service with Google Apps Script.

Usage

1. Prepare questions and answers.

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docker rmi $(docker images --format '{{.Repository}}:{{.Tag}}' | grep 'imagename')

For example, to delete all images that contains zulh inside the name, run:

docker rmi $(docker images --format '{{.Repository}}:{{.Tag}}' | grep 'zulh')

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What is this

This Gist is about using Client Certificates in Java when making HTTPs calls with plain Java code (java(x).net, no other frameworks) in a 2-way SSL context, that is: the Server trusts and uses a Client Public Key to establish the secure connection. The example is a Java runnable class for a Client that uses a Certificate to establish a Two Way SSL communication with a Server.

Disclaimer: this gist reflects my understanding, and is not necessarily 100% accurate. Feedback is appreciated.

Context

For this to work, the Client certificate has to be issued by a CA (Certification Authority) trusted by the Server, the same way that the Client has to trust the CA of the Server. In Java, "trust a CA" means having that CA stored in an encrypted file called "trust store" accessible from our code by the use of a password and the appropriate security SDK provided by the JDK.

How to store that trust stores' passwords securely in our enviroments is another story.

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• Open Automator
• Choose Quick Action as the document type
• Change Workflow receives current to files or folders in Finder.app
• For Action, choose Open Finder items from the left hand sidebar
• Change Open with to Visual Studio Code.app (find it in Other... )
• For the Icon, change Image to "Choose..." and select the Visual Stuido Code app. It'll automatically pick the icon
• Save it (Cmd+S) as something like "Open in VS Code"

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How to add startup sound to linux

I use this implementation on my RuneAudio player to play a sound when the raspberry pi is powered on.

1. Place your audio file in /var/local/

   cp startupsound.mp3 /var/local/

2. Create /usr/bin/startupsound.sh with these contents:

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upstream php-handler {
    server  unix:/run/php-fpm/www.sock;
}

server {
    #listen 443 ssl;
    listen 80;
    server_name 192.168.1.8;

    #ssl_certificate /etc/ssl/nginx/cloud.example.com.crt;

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{
    "name": "pingpong",
    "description": "Native messaging host example",
    "path": "path/to/release_executable",
    "type": "stdio",
    "allowed_origins": [
      "chrome-extension://extension_id/"
    ]
  }

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Upload a file with $.ajax to AWS S3 with a pre-signed url

When you read about how to create and consume a pre-signed url on this guide, everything is really easy. You get your Postman and it works like a charm in the first run.

Then you open your browser, try your usual $.ajax() and send your PUT operation, and you hit the cold iced wall of AWS error message, a simple <Code>SignatureDoesNotMatch</Code> that will steal hours from your productivity.

So here I come to save you and give you a free working example of how to upload a file directly to AWS S3 from your browser. You are wellcome :).

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General file permissions for ssh.

chmod 700 ~/.ssh
chmod 600 ~/.ssh/id_rsa
chmod 644 ~/.ssh/id_rsa.pub  
chmod 644 ~/.ssh/authorized_keys
chmod 644 ~/.ssh/known_hosts