echo Options

 Options      Description
 -n      do not print the trailing newline.
 -e      enable interpretation of backslash escapes.
 \b      backspace
 \\      backslash
 \n      new line
 \r      carriage return
 \t      horizontal tab
 \v      vertical tab

• source:
  • https://ubuntu-mate.community/u/NicoD
  • https://raspberrypi.stackexchange.com/questions/100926/64-bit-os-on-raspberry-pi-4/105082#105082
  •  
• Ubuntu Mate 19.10 download:
  • https://ubuntu.com/download/iot/raspberry-pi
  • x64
    • http://cdimage.ubuntu.com/releases/19.10/release/ubuntu-19.10-preinstalled-server-arm64+raspi3.img.xz
  • x32
    • http://cdimage.ubuntu.com/releases/19.10/release/ubuntu-19.10-preinstalled-server-armhf+raspi3.im

source: https://github.com/jackaudio/jackaudio.github.com/wiki/WalkThrough_User_AlsaInOut

Flash to Jack: https://jackaudio.org/faq/routing_flash.html

source: https://www.ostechnix.com/create-animated-gif-ubuntu-16-04/

• heisted a 'sticker' png from facebook messenger
• cropped it at 150x150 for 12 images
• created GIF from cropped images
• use convert & specify a group of images

convert -delay 3 -loop 0 throw_hearts_cr*.png bunny.gif

Raspberry Pi change username

Sources:

• https://www.raspberrypistarterkits.com/guide/raspberry-pi-default-login-change/
• https://pimylifeup.com/raspberry-pi-samba/
• http://archive.raspberrypi.org/html/
• http://archive.raspberrypi.org/

Pi username change

log out
sudo passwd root
<root_passwd>

logout

usermod –l mdp pi
<mdp_passwd>

Check home dir

usermod –m –d/home/mdp mdp

Pi Password change

Logout
login mdp
passwd

Samba - list users

sudo pdbedit -L -v

Unix username:        jimmy
NT username:          
Account Flags:        [U          ]
User SID:             S-1-

Some applications - such as gitg - make available LOCAL commits & branch management, but have no provision for PUSHING to the remote origin.

Luckly, git leverages 'hooks' that provide a means to add shell scripts for such a need.

Once a commit is done on a branch, git will call "/.git/hooks/post-commit" and - if present - will run the contained shell script.

#!/bin/bash

#
# post-commit web hook
#
#git push -u origin develop
git push -u origin ffsync-setup

#
# set this file to executable
#
# chmod 755 post-commit
#

this code block will push the ffsync-setup branch to the remote origin

source: http://wiki.playonlinux.com/index.php/How_to_move_PlayOnLinux_virtual_drives_to_another_disk

How to move PlayOnLinux virtual drives to another disk

SourceTree was rediculously slow with EVERYTHING. Found a post on Atlassian's forum where it said to run SourceTree as admin. It WORKED!

https://community.atlassian.com/t5/Sourcetree-questions/SourceTree-painfully-slow/qaq-p/395038

Download nodejs

• https://nodejs.org/en/download
• extract to /nodejs
• navigate to /nodejs

to test deployment, run version command

nodejs$ ./node -v

$ v10.16.0

Install Chrome

• https://chrome.google.com

Install lighthouse

npm install -g lighthouse

Lighthouse CLI

lighthouse <url>

lighthouse https://google.com

Testing NodeJS/Creating a NodeJS Server

/**
 * SanityTest for NodeJS v10
 */

var http = require('http');
http.createServer(
    function handler(req,res){
        res.writeHead(200,{'Content-Type': 'text/plain'});
        res.end('Hello World\n');
    }).listen(1337, '127.0.0.1');
    
console.log('Server running at http://127.0.0.1:1337/');

System Settings > Windows > Behavior > Special Key to move and resize windows = Disabled