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Ubuntu 18.04 Mail Server

Overview

Steps were re-written from below links for faster setup.
This guide assumes you are using Ubuntu 18 and Nginx.

Part 1: Build Your Own Email Server on Ubuntu: Basic Postfix Setup - LinuxBabe
Part 2: Install Dovecot IMAP server on Ubuntu and Enable TLS Encryption
Part 3: How to Set up SPF and DKIM with Postfix on Ubuntu Server

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<?php
defined('BASEPATH') OR exit('No direct script access allowed');
/**
 * Single Sender FIrebase Push To Android
 *
 * @package Codeigniter
 * @author Vicky Saputra <http://vicky.work
 **/
class Firebase_push
{

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<?php
/*  
Parameter Example
	$data = array('post_id'=>'12345','post_title'=>'A Blog post');
	$target = 'single tocken id or topic name';
	or
	$target = array('token1','token2','...'); // up to 1000 in one request
*/
public function sendMessage($data,$target){
//FCM api URL

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Parameters

Container: MP4

Parameter	YouTube recommends setting
-movflags faststart	moov atom at the front of the file (Fast Start)

Video codec: H.264

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#!/usr/bin/env bash
START_TIME=$SECONDS
set -e

echo "-----START GENERATING HLS STREAM-----"
# Usage create-vod-hls.sh SOURCE_FILE [OUTPUT_NAME]
[[ ! "${1}" ]] && echo "Usage: create-vod-hls.sh SOURCE_FILE [OUTPUT_NAME]" && exit 1

# comment/add lines here to control which renditions would be created
renditions=(

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#!/bin/bash

while true; do
	currTime=`date +%Y%m%d%H%M`
	if [ "$currTime" -ge 201507081658 -a "$currTime" -le 201507082300 ]; then
		echo "$currTime: Stream should be on. Start ffmpeg if the process does not exist"
		if [ "$(pidof ffmpeg)" ]; then
			echo "$currTime: ffmpeg already running."
			sleep 10
		else

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FFmpeg streaming

These are some ffmpeg command lines used when developing VHS dubbing controller.

HLS Stream (on Linux)

#!/bin/bash

# Stream a PAL 50i capture, cropped and de-interlaced using ffmpeg

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#!/bin/bash
# (C) Karl Mitchell 2017, GPL: https://www.gnu.org/licenses/gpl-3.0.en.html
# Best run once daily, e.g. using launchd or cron job, during quiet time
# Converts Channels DVR to a Plex & iOS-friendly m4v (h.264) format
# Pre-requisites:
#  HandBrakeCLI (video transcoding application)
# Optional pre-requisites:
#  MP4Box (part of GPAC, use MacPorts or similar) for marking commercials start/end as chapters
#  Curl and an IFTTT Maker Key for phone statusnotifications.
#  FFMPeg (a part of channels DVR, but you'll need to point to it) for commercial trimming

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# Get video duration in frames
	duration=$(ffmpeg -i [filename] 2>&1 | sed -n "s/.* Duration: \([^,]*\), start: .*/\1/p")
	fps=$(ffmpeg -i [filename] 2>&1 | sed -n "s/.*, \(.*\) tbr.*/\1/p")
	hours=$(echo $duration | cut -d":" -f1)
	minutes=$(echo $duration | cut -d":" -f2)
	seconds=$(echo $duration | cut -d":" -f3)
	FRAMES=$(echo "($hours*3600+$minutes*60+$seconds)*$fps" | bc | cut -d"." -f1)

# Start ffmpeg, use awk to flush the buffer and remove carriage returns
	ffmpeg -i [filename] [options] [outputfile] 2>&1 | awk '1;{fflush()}' RS='\r\n'>[errorlog] &

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# Run the last command as root
sudo !!
# Serve current directory tree at http://$HOSTNAME:8000/
python -m SimpleHTTPServer
# Save a file you edited in vim without the needed permissions
:w !sudo tee %
# change to the previous working directory
cd -
# Runs previous command but replacing
^foo^bar