Valentine Ubani Mayaki valmayaki

Create a Profile Page using Html and css

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Key	Value

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

Port forward to MySQL database

ssh -M -S <my-socket-name> -fNT -L localhost:33067:localhost:3306 <user>@<hostname>

-f Run in the background before command execution.
-N Don’t execute any commands
-T Disable pseudo-tty allocation. I don’t know what this means.

Setting up Babel and nodemon

Inital set-up

Set up project:

mkdir project
cd project
npm init -y

ffmpeg

Converting Audio into Different Formats / Sample Rates

Minimal example: transcode from MP3 to WMA:
ffmpeg -i input.mp3 output.wma

You can get the list of supported formats with:
ffmpeg -formats

Convert WAV to MP3, mix down to mono (use 1 audio channel), set bit rate to 64 kbps and sample rate to 22050 Hz:

	if [ ! -f .env ]
	then
	export $(cat .env \| xargs)
	fi

	<?php
	// https://laravel.io/forum/09-23-2014-how-to-support-http-byte-serving-in-file-streams
	// Provide a streaming file with support for scrubbing
	private function streamFile( $contentType, $path ) {
	$fullsize = filesize($path);
	$size = $fullsize;
	$stream = fopen($path, "r");
	$response_code = 200;
	$headers = array("Content-type" => $contentType);

	<?php
	function stream_notification_callback($notification_code, $severity, $message, $message_code, $bytes_transferred, $bytes_max) {

	static $filesize = null;

	switch ($notification_code) {
	case STREAM_NOTIFY_RESOLVE:
	case STREAM_NOTIFY_AUTH_REQUIRED:
	case STREAM_NOTIFY_COMPLETED:
	case STREAM_NOTIFY_FAILURE:

	<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
	<html>
	<head>
	<link rel="stylesheet" href="http://code.jquery.com/qunit/git/qunit.css" type="text/css" media="screen" />

	<!-- when.js Promises implementation -->
	<script src="https://raw.github.com/cujojs/when/master/when.js"></script>

	<!-- Unit testing and mocking framework -->
	<script type="text/javascript" src="http://code.jquery.com/qunit/git/qunit.js"></script>

	import random
	import math
	import timeit
	import matplotlib.pyplot as plt

	timeBubble = []
	timeSelection = []
	timeInsertion = []
	timeQuick = []
	timeMerge = []