Essehemy MohammedEssehemy

## gist:5015897
function dataURItoBlob(dataURI, callback) {
    // convert base64 to raw binary data held in a string
    // doesn't handle URLEncoded DataURIs - see SO answer #6850276 for code that does this
    var byteString = atob(dataURI.split(',')[1]);

    // separate out the mime component
    var mimeString = dataURI.split(',')[0].split(':')[1].split(';')[0]

    // write the bytes of the string to an ArrayBuffer
    var ab = new ArrayBuffer(byteString.length);

## 01-generate-ed25519-ssh-key.sh
#!/bin/bash

# generate new personal ed25519 ssh keys
ssh-keygen -o -a 100 -t ed25519 -f ~/.ssh/id_ed25519 -C "rob thijssen <rthijssen@gmail.com>"
ssh-keygen -o -a 100 -t ed25519 -f ~/.ssh/id_robtn -C "rob thijssen <rob@rob.tn>"

# generate new host cert authority (host_ca) ed25519 ssh key
# used for signing host keys and creating host certs
ssh-keygen -t ed25519 -f manta_host_ca -C manta.network

## client.html
<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>HMAC-SHA256 Example</title>
</head>
<body>
    <script src="http://crypto.stanford.edu/sjcl/sjcl.js"></script>
    <script>
        var sharedSecret, query, signature, hmac, xhr;

## nginx.conf
# to generate your dhparam.pem file, run in the terminal
openssl dhparam -out /etc/nginx/ssl/dhparam.pem 2048

## opening-and-closing-an-ssh-tunnel-in-a-shell-script-the-smart-way.md

      
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              49 forks
            
          
              25 comments
            
          
              455 stars
            
          
                scy
                / opening-and-closing-an-ssh-tunnel-in-a-shell-script-the-smart-way.md
            
            
              Last active
              July 18, 2024 07:57
            
              
                Opening and closing an SSH tunnel in a shell script the smart way
              
          
    Opening and closing an SSH tunnel in a shell script the smart way

I recently had the following problem:

From an unattended shell script (called by Jenkins), run a command-line tool that accesses the MySQL database on another host.
That tool doesn't know that the database is on another host, plus the MySQL port on that host is firewalled and not accessible from other machines.

We didn't want to open the MySQL port to the network, but it's possible to SSH from the Jenkins machine to the MySQL machine. So, basically you would do something like
ssh -L 3306:localhost:3306 remotehost

  
## mongoose-encrypted-schematype-field.md

      
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              26 stars
            
          
                kljensen
                / mongoose-encrypted-schematype-field.md
            
            
              Last active
              June 6, 2023 13:25
            
              
                Encrypt a text field in Mongoose MongoDB ORM
              
          
    Encrypting text fields in Mongoose is easy using Node's built-in crypto module. You might want to do this if you're using MongoDB as a service (see the recent MongoHQ security breach); or, if you're storing OAuth tokens that could, in the wrong hands, screw with somebody's account on a 3rd party service. (Of course, you should never encrypt passwords: those should be hashed.)
Imagine you have a Mongoose model like that shown below, which is modified only slighly from the example on the MongooseJS homepage.
var mongoose = require('mongoose');
mongoose.connect('mongodb://localhost/test');

var User = mongoose.model('User', {
 name: String,

  
## iterm2-solarized.md

      
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                kevin-smets
                / iterm2-solarized.md
            
            
              Last active
              July 23, 2024 04:22
            
              
                iTerm2 + Oh My Zsh + Solarized color scheme + Source Code Pro Powerline + Font Awesome + [Powerlevel10k] - (macOS)
              
          
    Default


Powerlevel10k


## git.migrate
#!/bin/bash
# Sometimes you need to move your existing git repository
# to a new remote repository (/new remote origin).
# Here are a simple and quick steps that does exactly this.
#
# Let's assume we call "old repo" the repository you wish
# to move, and "new repo" the one you wish to move to.
#
### Step 1. Make sure you have a local copy of all "old repo"
### branches and tags.

## largestFiles.py
#!/usr/bin/python
# -*- coding: utf-8 -*-

# Python script to find the largest files in a git repository.
# The general method is based on the script in this blog post:
# http://stubbisms.wordpress.com/2009/07/10/git-script-to-show-largest-pack-objects-and-trim-your-waist-line/
#
# The above script worked for me, but was very slow on my 11GB repository. This version has a bunch
# of changes to speed things up to a more reasonable time. It takes less than a minute on repos with 250K objects.
#

## toUnicode.js
function toUnicode(str) {
	return str.split('').map(function (value, index, array) {
		var temp = value.charCodeAt(0).toString(16).toUpperCase();
		if (temp.length > 2) {
			return '\\u' + temp;
		}
		return value;
	}).join('');
}
	function dataURItoBlob(dataURI, callback) {
	// convert base64 to raw binary data held in a string
	// doesn't handle URLEncoded DataURIs - see SO answer #6850276 for code that does this
	var byteString = atob(dataURI.split(',')[1]);

	// separate out the mime component
	var mimeString = dataURI.split(',')[0].split(':')[1].split(';')[0]

	// write the bytes of the string to an ArrayBuffer
	var ab = new ArrayBuffer(byteString.length);
	#!/bin/bash

	# generate new personal ed25519 ssh keys
	ssh-keygen -o -a 100 -t ed25519 -f ~/.ssh/id_ed25519 -C "rob thijssen <rthijssen@gmail.com>"
	ssh-keygen -o -a 100 -t ed25519 -f ~/.ssh/id_robtn -C "rob thijssen <rob@rob.tn>"

	# generate new host cert authority (host_ca) ed25519 ssh key
	# used for signing host keys and creating host certs
	ssh-keygen -t ed25519 -f manta_host_ca -C manta.network
	<!DOCTYPE html>
	<html lang="en">
	<head>
	<meta charset="UTF-8">
	<title>HMAC-SHA256 Example</title>
	</head>
	<body>
	<script src="http://crypto.stanford.edu/sjcl/sjcl.js"></script>
	<script>
	var sharedSecret, query, signature, hmac, xhr;
	# to generate your dhparam.pem file, run in the terminal
	openssl dhparam -out /etc/nginx/ssl/dhparam.pem 2048
	#!/bin/bash
	# Sometimes you need to move your existing git repository
	# to a new remote repository (/new remote origin).
	# Here are a simple and quick steps that does exactly this.
	#
	# Let's assume we call "old repo" the repository you wish
	# to move, and "new repo" the one you wish to move to.
	#
	### Step 1. Make sure you have a local copy of all "old repo"
	### branches and tags.
	#!/usr/bin/python
	# -- coding: utf-8 --

	# Python script to find the largest files in a git repository.
	# The general method is based on the script in this blog post:
	# http://stubbisms.wordpress.com/2009/07/10/git-script-to-show-largest-pack-objects-and-trim-your-waist-line/
	#
	# The above script worked for me, but was very slow on my 11GB repository. This version has a bunch
	# of changes to speed things up to a more reasonable time. It takes less than a minute on repos with 250K objects.
	#
	function toUnicode(str) {
	return str.split('').map(function (value, index, array) {
	var temp = value.charCodeAt(0).toString(16).toUpperCase();
	if (temp.length > 2) {
	return '\\u' + temp;
	}
	return value;
	}).join('');
	}