Axel Werner's OPEN SOURCE Knowledge Base

How i would install Ubuntu server 20.04 LTS with bridged interfaces?

Anonymous (anonymous@undisclosed.example.com) — 2022-11-02T15:47:03+00:00

How i would install Ubuntu server 20.04 LTS with bridged interfaces? FIXME FIXME FIXME work in progress STUFF TO READ: * * FIXME FIXME FIXME Szenario / User requirements: This is the network how i like to have it: * [X] are Hosts/Devices

Meine IT Artikel

Anonymous (anonymous@undisclosed.example.com) — 2026-02-12T17:01:42+00:00

Meine IT Artikel Linux * How to convert and stabilize Panasonic SDR-H20 video files to h265 mkv using ffmpeg * Improve your MPV experience by adding a trash-and-skip key binding workflow * SAMBA - Einige nützliche NET Kommandos... * mutt goes Maildir/ - Wie man mutt für Maildir konfiguriert * Link Speed und Link Modus einer Ethernet Schnittstelle einstellen mit ethtool * Screen - Fenster Manager und Multifunktions-Werkzeug für die Text-Konsole * Systemweites AUTOLOGOUT für ROOT…

How to install and configure Docker on UBUNTU Server 20.04 (and similar)

Anonymous (anonymous@undisclosed.example.com) — 2022-08-31T12:30:19+00:00

How to install and configure Docker on UBUNTU Server 20.04 (and similar) One can find “manuals” and “how to”s for this topic everywhere, but there is always something important missing and thus you'll have to do further search and puzzle everything together. I'm not saying that my manual here is ever complete, but at least from an administrators standpoint it hopefully covers more than the average docker page on the interwebs to prevent Docker from going haywire and pulling down your host. Sinc…

Proxmox 7 Installation and Configuration with two network interfaces

Anonymous (anonymous@undisclosed.example.com) — 2023-08-05T14:01:26+00:00

Proxmox 7 Installation and Configuration with two network interfaces Network Scenario : This page show the installation notes for a two network interfaced Proxmox 7 virtualisation server. This is my network scenario we are going to work on: {LAN 192.168.0.0/24} || +==========================+ | [LAN IF 192.168.0.250] | | ProxMox 7 Host | | pve.lan | | [DMZ IF 192.168.178.250] | +==========================+ || {DMZ…

How to make an Ubuntu or Debian apt repository locally available as an emergency offline fallback

Anonymous (anonymous@undisclosed.example.com) — 2022-08-31T12:30:19+00:00

How to make an Ubuntu or Debian apt repository locally available as an emergency offline fallback Maybe you never had that problem yourself, but there may be reasons why someone want to have one or multiple Ubuntu or Debian online repositories available on your local network. Maybe because you throw an Linux installation party and dozens of times the same repos and files are been pulled over a thin DSL connection. Or you want your own local mirror in case your internet connection goes down. Or …

My Reaction / Research on julian's investigates how slow is arduino youtube video

Anonymous (anonymous@undisclosed.example.com) — 2022-08-31T12:30:19+00:00

My Reaction / Research on julian's investigates how slow is arduino youtube video After i have seen Julian's YouTube Video ( ) on Arduino Microcontrollers i was courious about if the Arduino is really that slow and so i wanted to test it myself, trying out multiple methods to switch on and of a single pin on the arduino as fast as we can. This Page summarizes my results and shows the oscilloscope (scope) Screenshots and code that i have made and used.

How to achieve easy automatic deployment of Centos7 as VirtualBox VM in a dynamic DNS LAN environment with an Ansible playbook

Anonymous (anonymous@undisclosed.example.com) — 2022-08-31T12:30:19+00:00

How to achieve easy automatic deployment of Centos7 as VirtualBox VM in a dynamic DNS LAN environment with an Ansible playbook PLEASE NOTE:“”“” Scenario / Environment: * Have an internet connected LAN with a local DHCP and “dynamic DNS”

How to configure or add a static IPv6 address to your IPv4 Ubuntu Server with bridged interfaces?

Anonymous (anonymous@undisclosed.example.com) — 2022-08-31T12:30:19+00:00

How to configure or add a static IPv6 address to your IPv4 Ubuntu Server with bridged interfaces? I ran a UBUNTU Server 14.04/16.04 LTS on a computer on a small SOHO as an router/firewall, using two network interfaces. One is towards the internet, one for internal (

My first real Java project - flashySquare V.1.0

Anonymous (anonymous@undisclosed.example.com) — 2022-08-31T12:30:19+00:00

My first real Java project - flashySquare V.1.0 This was my first self initiated Java Project from the scratch for training purposes. It requires the acm library which you can download from . It shows a simple rectangle and changes (fades) it from one color to another random color. Just like you might know it from some Microcontroller RGB LED Projects.

My Solution on CS106A - Section 20 - Problem 3 - Random Circles

Anonymous (anonymous@undisclosed.example.com) — 2022-08-31T12:30:19+00:00

My Solution on CS106A - Section 20 - Problem 3 - Random Circles This is my Solution on CS106A - Section 20 - Problem 3 - Random Circles from the Computer Science Course CS106A of Prof. Mehran Sahami at the STANFORD University. Question: On some runs of this program you might not see ten circles. Why? My Answer: Since there is no special controlling on where to place new circles on the canvas it is possible that it puts a new larger circle on top of an older smaller circle, covering the older…

learning python3 - barGraph.py - small program to generate an ascii bargraph of any width

Anonymous (anonymous@undisclosed.example.com) — 2022-08-31T12:30:19+00:00

learning python3 - barGraph.py - small program to generate an ascii bargraph of any width These are my first steps in python programming language. The result is a little program that draws an ascii bargraph on to your console window, platform independend. it comes with 3 internal demos to show what it can do so far. its not really a beauty and could be done better, but for my first steps in python im quiet happy with my progress in learning python so far. So to help out others to help learn pyt…

learning python3 - frameIt.py - command line tool to frame text on the console

Anonymous (anonymous@undisclosed.example.com) — 2022-08-31T12:30:19+00:00

learning python3 - frameIt.py - command line tool to frame text on the console These are my first steps in python programming language. The result is a little cli tool/function/library (whatever you call it ) that will encapsulate any given text within a

Repairing a faulty 80s Power Supply 13.8V/3A from CONRAD Elektronik, Germany

Anonymous (anonymous@undisclosed.example.com) — 2022-08-31T11:16:16+00:00

Repairing a faulty 80s Power Supply 13.8V/3A from CONRAD Elektronik, Germany CONRAD Elektronics is possibly Germanys largest and certainly the most popular Electronic Parts Reseller. Some time in the 1980s i bought a stabilized 13.8V, 3A (5A) DC Power Supply that served my needs for decades now. Lately i accidentally dropped it to the floor and after re-checking it, it seems to send out pretty much

My Solution on CS106A - Section 20 - Problem 4 - Drawing Lines

Anonymous (anonymous@undisclosed.example.com) — 2022-08-31T12:30:19+00:00

My Solution on CS106A - Section 20 - Problem 4 - Drawing Lines This is my Solution on CS106A - Section 20 - Problem 4 - Drawing Lines from the Computer Science Course CS106A of Prof. Mehran Sahami at the STANFORD University. My Code: /* * File: DrawLines.java * ------------------- * Name: Axel Werner [mail@awerner.myhome-server.de] * Section Leader: * * CS106A - Section 20 - Problem 4 - Draw Lines * * Write a GraphicsProgram that allows the user to * draw lines on the canvas. Pr…

Willkommen auf meiner persönlichen Website!

Anonymous (anonymous@undisclosed.example.com) — 2024-01-03T12:30:08+00:00

Willkommen auf meiner persönlichen Website! Vorwort: Auf dieser Website veröffentliche ich von Zeit zu Zeit einige meiner IT Projekte, Dokumentationen, Anleitungen, How-To's oder sonstigen Informations-Sammlungen, welche ich für allgemein interessant und nützlich halte. Sie soll u.a. auch für mich selbst als eine Art

My Solution on Assignment 1 - Problem 2

Anonymous (anonymous@undisclosed.example.com) — 2022-08-31T12:30:19+00:00

My Solution on Assignment 1 - Problem 2 This is my Solution of Assignment 1 - Problem 2 from the Computer Science Course CS106A of Prof. Mehran Sahami at the STANFORD University. /* * File: StoneMasonKarel.java * -------------------------- * The StoneMasonKarel subclass as it appears here does nothing. * When you finish writing it, it should solve the "repair the quad" * problem from Assignment 1. In addition to editing the program, * you should be sure to edit this comment so that i…

My Solution on Assignment 1 - Problem 3

Anonymous (anonymous@undisclosed.example.com) — 2022-08-31T12:30:19+00:00

My Solution on Assignment 1 - Problem 3 This is my Solution of Assignment 1 - Problem 3 from the Computer Science Course CS106A of Prof. Mehran Sahami at the STANFORD University. /* * File: CheckerboardKarel_v2.java * ---------------------------- * When you finish writing it, the CheckerboardKarel class should draw * a checkerboard using beepers, as described in Assignment 1. You * should make sure that your program works for all of the sample * worlds supplied in the starter folder. …

My Solution on Assignment 1 - Problem 4

Anonymous (anonymous@undisclosed.example.com) — 2022-08-31T12:30:19+00:00

My Solution on Assignment 1 - Problem 4 This is my Solution of Assignment 1 - Problem 4 from the Computer Science Course CS106A of Prof. Mehran Sahami at the STANFORD University. /* * File: MidpointFindingKarel.java * ------------------------------- * When you finish writing it, the MidpointFindingKarel class should * leave a beeper on the corner closest to the center of 1st Street * (or either of the two central corners if 1st Street has an even * number of corners). Karel can put do…

My Solution on Assignment 2 - Problem 1

Anonymous (anonymous@undisclosed.example.com) — 2022-08-31T12:30:19+00:00

My Solution on Assignment 2 - Problem 1 This is my Solution of Assignment 2 - Problem 1 from the Computer Science Course CS106A of Prof. Mehran Sahami at the STANFORD University. /* * File: Pyramid.java * Name: * Section Leader: * ------------------ * This file is the starter file for the Pyramid problem. * It includes definitions of the constants that match the * sample run in the assignment, but you should make sure * that changing these values causes the generated display * to …

My Solution on Assignment 2 - Problem 2

Anonymous (anonymous@undisclosed.example.com) — 2022-08-31T12:30:19+00:00

My Solution on Assignment 2 - Problem 2 This is my Solution of Assignment 2 - Problem 2 from the Computer Science Course CS106A of Prof. Mehran Sahami at the STANFORD University. /* * File: Target.java * Name: * Section Leader: * ----------------- * This file is the starter file for the Target problem. * Assignment 2 , Problem 2 */ import acm.graphics.*; import acm.program.*; import java.awt.*; import javax.swing.plaf.synth.ColorType; public class Target extends GraphicsProgram {…

My Solution on Assignment 2 - Problem 4

Anonymous (anonymous@undisclosed.example.com) — 2022-08-31T12:30:19+00:00

My Solution on Assignment 2 - Problem 4 This is my Solution of Assignment 2 - Problem 4 from the Computer Science Course CS106A of Prof. Mehran Sahami at the STANFORD University. /* * File: PythagoreanTheorem.java * Name: Axel Werner * Section Leader: * ----------------------------- * This file is the starter file for the PythagoreanTheorem problem. */ import acm.program.*; public class PythagoreanTheorem extends ConsoleProgram { public void run() { println("PythagoreanTheorem : …

My Solution on Assignment 2 - Problem 5

Anonymous (anonymous@undisclosed.example.com) — 2022-08-31T12:30:19+00:00

My Solution on Assignment 2 - Problem 5 This is my Solution of Assignment 2 - Problem 5 from the Computer Science Course CS106A of Prof. Mehran Sahami at the STANFORD University. /* * File: FindRange.java * Name: Axel Werner * Section Leader: * -------------------- * This file is the starter file for the FindRange problem. */ import acm.program.*; public class FindRange extends ConsoleProgram { /** * Main Program to requests a list of integers from the user * to determine an…

My Solution on Assignment 2 - Problem 6

Anonymous (anonymous@undisclosed.example.com) — 2022-08-31T12:30:19+00:00

My Solution on Assignment 2 - Problem 6 This is my Solution of Assignment 2 - Problem 6 from the Computer Science Course CS106A of Prof. Mehran Sahami at the STANFORD University. /* * File: Hailstone.java * Name: Axel Werner * Section Leader: * -------------------- * This file is the starter file for the Hailstone problem. */ import acm.program.*; /** * Class to ask User for a integer start number to * calculate Hailstone Numbers sequence. * @author Axel Werner */ public class …

My Solution on Section1 - Cleaning PunchCards

Anonymous (anonymous@undisclosed.example.com) — 2022-08-31T12:30:19+00:00

My Solution on Section1 - Cleaning PunchCards This is my Solution of “Section1 - Cleaning PunchCards” from the Computer Science Course CS106A of Prof. Mehran Sahami at the STANFORD University. /* * File: Section1.java * -------------------------------- * Karel checks a punch card for half punched holes and cleans * those up. holes where the middle thingy is still existend * are considered as valid. */ import stanford.karel.*; public class Section1 extends SuperKarel { /** * Specif…

CAVE cloning VMs of UBUNTU 20.04 Server or Desktop can result in networking problems. Same IP address in every cloned VM, even if MAC address has been changed

Anonymous (anonymous@undisclosed.example.com) — 2022-08-31T12:30:19+00:00

CAVE cloning VMs of UBUNTU 20.04 Server or Desktop can result in networking problems. Same IP address in every cloned VM, even if MAC address has been changed Problem: Using virtualisation (VMs) like Virtualbox, KVM etc, people sometimes “clone”

How to limit users to update or upgrade installed packages on their UBUNTU 20.04 installation but not allow installing packages using sudo and aptitude

Anonymous (anonymous@undisclosed.example.com) — 2022-08-31T12:30:19+00:00

How to limit users to update or upgrade installed packages on their UBUNTU 20.04 installation but not allow installing packages using sudo and aptitude By default on UBUNTU/DEBIAN users require membership in “adm” or “sudo” groups, to gain the right to use sudo freely. However there are many situations where you want regular users to be able to update and upgrade their system any time, even without using a password every time. For example:

How to update BIOS firmware for Toshiba Tecra A2 (maybe others as well) within Linux

Anonymous (anonymous@undisclosed.example.com) — 2022-08-31T12:30:19+00:00

How to update BIOS firmware for Toshiba Tecra A2 (maybe others as well) within Linux I have got an ancient ca 2003/2004 Toshiba business notebook with some 32bit, NO PAE, 1 core, Pentium M (centrino?) CPU , 1GB RAM, 40GB PATA HDD, WiFi, DVD writer with a dead battery. Beside that its in pretty good shape. Comes with a DB25 parallel port, PCMCIA Slot, 2 USB (v2?) Ports. So if it would run a somewhat recent Linux it would be still an awesome nice tool for simple tasks where power consumption is n…

Improve your MPV experience by adding a trash-and-skip key binding workflow

Anonymous (anonymous@undisclosed.example.com) — 2026-01-25T22:58:14+00:00

Improve your MPV experience by adding a trash-and-skip key binding workflow I know #Kodi ! I love #VLC ! But since i learned to know #MPV is LIVE it! Looks like nothing, but is everything one could ever want. However the default configuration really needs some personal touch to make it work for me.

English Song Lyrics - Herbert Groenemeyer - Hold me (Halt mich)

Anonymous (anonymous@undisclosed.example.com) — 2022-08-31T11:16:16+00:00

English Song Lyrics - Herbert Groenemeyer - Hold me (Halt mich) “” HOLD ME (Halt mich) take dreams for hard cash indulge in fantasies have cought myself in you dont know whats happening to me warming to youre voice resting in your arms hold me just a little while till i fall asleep - feeling secure with you betting my heart on you want to cherish every moment for all eternity its good to lean against you and youve got happiness in excess to you i yield submissively and find solace in you. - i…

A Solution on Assignment 2 - Problem 3

Anonymous (anonymous@undisclosed.example.com) — 2022-08-31T12:30:19+00:00

A Solution on Assignment 2 - Problem 3 This is “a” Solution of Assignment 2 - Problem 3 from the Computer Science Course CS106A of Prof. Mehran Sahami at the STANFORD University. In fact, i cant realy tell anymore if I wrote this code or if i found it somewhere on the internet :). It looks pretty much like programm code i usualy make. But will not claim that this is MY Code. Just a Code that solves the Problem as requested for example purposes.

CS106A BouncingBall Sample Code Phenomenon - Ball bounces forever?

Anonymous (anonymous@undisclosed.example.com) — 2022-08-31T12:30:19+00:00

CS106A BouncingBall Sample Code Phenomenon - Ball bounces forever? This is the “BouncingBall” Sample Code for Computer Science Course CS106A of Prof. Mehran Sahami by the STANFORD University. Testing the Code on my computer with some changes at the parameters (class vars) turned out to show some STRANGE PHENOMENON. The ball seems not to come to rest. In fact, at the end you can easily see that it sometimes

Demo - assignment operators which way around?

Anonymous (anonymous@undisclosed.example.com) — 2022-08-31T12:30:19+00:00

Demo - assignment operators which way around? I found an interesting Question on one YouTube Video Tutorials and thought about testing it out myself and make a demo to it. The Original Video was: Question was: what is the difference between c+=b and c=+b

Learning Java - DoWhileDemo_WarGames_LoginDemo

Anonymous (anonymous@undisclosed.example.com) — 2022-08-31T12:30:19+00:00

Learning Java - DoWhileDemo_WarGames_LoginDemo Just some little code demonstrating a do_while loop in java and some simple graphical userinterface prompting for input. Inspired by my favorite Hacker Movie of all times - “WarGames”. import javax.swing.JOptionPane; public class DoWhileDemo_WarGames_Login { public static void main(String[] args) { String command; boolean isWrongCommand; int errorCounter=0; do{ command = JOptionPane.showInputDialog("LOGIN: "); if(command.equals("…

How to add more system information and color to your virtual terminals and shells with "screenfetch"

Anonymous (anonymous@undisclosed.example.com) — 2022-08-31T12:30:19+00:00

How to add more system information and color to your virtual terminals and shells with "screenfetch" You might have seen screenfetch or similar tools like bginfo (winblows only) before. But how to install them so that they provide constant use to every user on a system. Here is how i did it for my virtual consoles (text based pre login environment). Thanks to cron it runs every minute and updates the

EXPERIMENTAL HA Kubernetes Cluster for SOHO use on UBUNTU + k3sup + k3s base

Anonymous (anonymous@undisclosed.example.com) — 2022-08-31T12:30:19+00:00

EXPERIMENTAL HA Kubernetes Cluster for SOHO use on UBUNTU + k3sup + k3s base Project Goal: * self hosted HA fault tolerant (multi master) Kubernetes Cluster * NO SINGLE POINT OF FAILURE! * no “external” managed Services required (no separate database/load balancer)

How to convert and stabilize Panasonic SDR-H20 video files to h265 mkv using ffmpeg

Anonymous (anonymous@undisclosed.example.com) — 2026-02-15T10:32:38+00:00

How to convert and stabilize Panasonic SDR-H20 video files to h265 mkv using ffmpeg If you once owned a digital Panasonic SDR-H20 SD Video Camera from around the mid-to-late 2000s, you might still have native video files from that device tucked away somewhere. Note that this camera was/is Standard Definition (SD) only—so no 1080p Full HD here!

How to enable audio normalization a.k.a. audio compression a.k.a. audio dynamic range compression under Linux? (pulse audio)

Anonymous (anonymous@undisclosed.example.com) — 2026-02-08T07:05:18+00:00

How to enable audio normalization a.k.a. audio compression a.k.a. audio dynamic range compression under Linux? (pulse audio) NOTE / UPDATE : :!: Meanwhile i managed to achieve the same result on Linux Distros with PipeWire , using SWH's LV2 and/or LADSPA plugins. See my articles about pipewire on this website.

How to enable pc speaker on UBUNTU 20.04 to make your server audible without additional hardware

Anonymous (anonymous@undisclosed.example.com) — 2022-10-30T16:43:26+00:00

How to enable pc speaker on UBUNTU 20.04 to make your server audible without additional hardware Maybe you run a physical Linux server somewhere under a desk or somewhere in your small office / home office which still contains spinning platters ( hard disks ) or any other hardware that

How to mount home from another already mounted drive or volume for better snaps support

Anonymous (anonymous@undisclosed.example.com) — 2022-08-31T12:30:19+00:00

How to mount home from another already mounted drive or volume for better snaps support Something historic “snaps” seem Canonical's/Ubuntu's prefered package format for easy and fast installation of desktop apps. However the whole snaps system often fails with errors if someone has moved the

How to use a (usb) floppy drive to backup and restore double density (dd) and high density (hd) disk images using Linux for vintage roland synthesizers, samplers or music keyboards

Anonymous (anonymous@undisclosed.example.com) — 2022-08-31T12:30:19+00:00

How to use a (usb) floppy drive to backup and restore double density (dd) and high density (hd) disk images using Linux for vintage roland synthesizers, samplers or music keyboards Old vintage synthesizer keyboards, samplers and other musical devices often used 3.5

STATA 12 on 64Bit SLES 11 sp1 - libgtksourceview-1.0.so.0: cannot open shared object file

Anonymous (anonymous@undisclosed.example.com) — 2022-08-31T12:30:19+00:00

STATA 12 on 64Bit SLES 11 sp1 - libgtksourceview-1.0.so.0: cannot open shared object file Today i tried to install STATA12 Statistics Software on a SuSE Linux Enterprise Server (SLES) 11 sp1 64bit and stumbled over an error message that some library is yet not found: