Paolo Barbolini paolobarbolini

This is a document describing how to install Ubuntu 16.04 LTS on ThinkPad T470s.

My Hardware

CPU: Intel Core i7-7600U (2.80GHz, 4MB cache)
Graphics: Intel HD Graphics 620
Display: 14” WQHD (2560 X 1440) IPS Non-Touch Anti-Glare
Memory: 24GB DDR4 2133 MHz (8GB Onboard + 16GB)
SSD: PCIe-NVMe 256G OPAL 2.0
Wireless: Intel Dual Band Wireless AC (2x2) 8265 Bluetooth 4.1
Fingerprint Reader

running:

bash create-vod-hls.sh beach.mkv

will produce:

    beach/
      |- playlist.m3u8
 |- 360p.m3u8

Check running mysql container:

$ sudo docker ps
CONTAINER ID        IMAGE               COMMAND                  CREATED             STATUS              PORTS                    NAMES
26137efa979f        mysql               "docker-entrypoint..."   8 months ago        Up 10 minutes       0.0.0.0:3306->3306/tcp   container-mysql

Check docker container mysql version:

$ sudo docker exec container-mysql mysqld --version`
mysqld  Ver 5.7.15 for Linux on x86_64 (MySQL Community Server (GPL))

How to batch convert JPG images to progressive JPG images?

Progressive JPG images, as opposed to baseline JPG, will display right away in the browser, and will load bits of it in cycle, rendering it from blur to clear.

Progressive is known to provide a better user experience, preventing the ”fax loading” effect. Where the image is displayed in full, but sequentially from top to bottom.

The imagemagick package will install the convert command that you can run to convert JPG to progressive:

convert -strip -interlace Plane -quality 80 input-file.jpg output-file.jpg

Video stabilization using VidStab and FFMPEG

Examples here use the default settings, see the VidStab readme on GitHub for more advanced instructions.

Here's an example video I made

Install ffmpeg with the vidstab plugin from homebrew

brew install ffmpeg --with-libvidstab

	package main

	import (
	"flag"
	"fmt"
	"log"
	"net/http"
	"os"

	"golang.org/x/net/webdav"

	# Instructions for 4.14 and cuda 9.1
	# If upgrading from 4.13 and cuda 9.0
	$ sudo apt-get purge --auto-remove libcud*
	$ sudo apt-get purge --auto-remove cuda*
	$ sudo apt-get purge --auto-remove nvidia*
	# also remove the container directory direcotory at /usr/local/cuda-9.0/

	# Important libs required with 4.14.x with Cuda 9.X
	$ sudo apt install libelf1 libelf-dev

	<?
	/**
	* Generates a offline-mode player UUID.
	*
	* @param $username string
	* @return string
	*/
	public static function constructOfflinePlayerUuid($username) {
	//extracted from the java code:
	//new GameProfile(UUID.nameUUIDFromBytes(("OfflinePlayer:" + name).getBytes(Charsets.UTF_8)), name));

	file, err := os.Open(path)
	if err != nil {
	return err
	}
	defer file.Close()

	// Only the first 512 bytes are used to sniff the content type.
	buffer := make([]byte, 512)
	_, err = file.Read(buffer)
	if err != nil {

	# Encrypt STDIN and provide a password(prompt)
	echo "message" \| openssl enc -aes-256-cbc -a

	# Decrypt STDIN and provide a password(prompt)
	echo "encrypted" \| openssl enc -aes-256-cbc -a -d