Essehemy MohammedEssehemy

#!/bin/bash

# update ubuntu server
sudo apt-get update

# upgrade ubuntu server
sudo apt-get upgrade

# install curl, make, g++ and git

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Powerlevel10k

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,

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

	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('');
	}

	#!/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.
	#

	#!/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.

	<!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;

	#!/bin/bash

	mkdir -p ~/.ssh

	# generate new personal ed25519 ssh keys
	ssh-keygen -o -a 100 -t ed25519 -f ~/.ssh/id_ed25519 -C "rob thijssen <[email protected]>"
	ssh-keygen -o -a 100 -t ed25519 -f ~/.ssh/id_robtn -C "rob thijssen <[email protected]>"

	# generate new host cert authority (host_ca) ed25519 ssh key
	# used for signing host keys and creating host certs

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