PigDogBay

__NOTOC__
Notes on the Sinclair ZX Spectrum Next [[Retro Gaming]], [[ZX Spectrum]], [[Z80 Assembly Language]]

==Next BASIC==
===Editor===
EXTEND MODE, CAPSLOCK - Start of program<br/>
EXTEND MODE, GRAPHICS - End of program
<pre>
ERASE 100,200          ;Erase lines 100 to 200
LINE 100,2             ;Renumbers lines from 100 in steps of 2, 100, 102, 104, 106...

ObjSal

How to configure postfix mail for iCloud & GMail

Perfect to configure alertnotify in bitcoin.conf for bitcoind
i.e. alertnotify=echo %s | mail -a "From: Sender <sender@mail.com>" -s "Bitcoin Alert" MY_EMAIL@MAIL.COM

On Linux, Raspberry Pi, Debian, Ubuntu install:

$ sudo apt-get install postfix mailutils libsasl2-modules

avoidik

Citrix Workspace

In this manual I assume that we'll be using usb audio handset instead of hdmi audio output

Step

Check available architectures first

$ dpkg --print-architecture

akhdaniel

create systemctl service file

vim /etc/systemd/system/docker-odoo.service

file content is

probonopd

Think twice before abandoning X11. Wayland breaks everything!

Wayland breaks everything! It is binary incompatible, provides no clear transition path with 1:1 replacements for everything in X11, and is even philosophically incompatible with X11. Hence, if you are interested in existing applications to "just work" without the need for adjustments, then you may be better off avoiding Wayland.

Wayland solves no issues I have but breaks almost everything I need. Even the most basic, most simple things (like xkill) - in this case with no obvious replacement. And usually it stays broken, because the Wayland folks mostly seem to care about Automotive, Gnome, maybe KDE - and alienating everyone else (e.g., people using just an X11 window manager or something like GNUstep) in the process.

Feature comparison

Paraphraser

Tutorial: MQTT and the retain flag

Assumptions and setup

This tutorial assumes:

• a single computer (like a Raspberry Pi)
• MQTT broker (like Mosquitto) running
• the mosquitto_pub and mosquitto_sub commands are available.

alastair-dm

#!/usr/bin/python3
#
# load_agps_data
#
# proof of concept loading of agps data to quectel modem via AT commands

from datetime import datetime, timezone
import requests
import serial

johnjeffers

Ubuntu 20.04 on a 15" Retina MacBook Pro (Mid-2014)

These are notes from my efforts to get Ubuntu 20.04 installed on my older MacBook Pro. I'm making this gist public in the hopes that it's helpful to others.

I did a Minimal install, but selected the option to install additional 3rd-party drivers.

Wifi doesn't work during the install (because it requires a 3rd-party driver), so you won't be able to choose to download updates while installing. No big deal, run a software update after the install.

The installer takes about 25 minutes to complete. Post-install, most things work. The only driver I had to manually install was for the FaceTime camera. More on that below.

Paraphraser

Recipe: from MQTT to InfluxDB via Node-RED

• 2024-05-16 adds case study explaining how to extract values from topic strings, and how to specify the measurement name in the message payload provided to the "influxdb out" node.
• 2023-12-02 revise graphics to correspond with "influxdb out" node, and explain the pros and cons of InfluxDB 1.x vs InfluxDB 2.

Introduction

Getting data produced by IoT sensors into a database is practically a mandatory step before effective visualisation (eg dashboards).

This recipe shows you how to get an MQTT payload into an InfluxDB database using three Node-RED nodes. It makes the following assumptions:

sergeyklay

Journalctl Cheat Sheet

Configuration

Permissions

To see messages from other users and the system as well as performing various log operations from a regular user add it to the group:

sudo usermod -aG systemd-journal $USER