johnk – Page 5 – External Documents

BBB System Configuration Testing Script

Apr 22, 2022

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I’m working on a testing script to see if my server can run BBB. Useful if you’re building old systems to use as a development box. This is based on the BBB installation instructions. It doesn’t do everything, just several preflighting tasks. It ends before the Firewall section.

After do-release-upgrade Name Resolver Stops Working

Dec 12, 2021

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by

johnk

in Linux

Symptoms: after doing a big release upgrade on Ubuntu, the name resolution stops working. You can’t use domain names to reach websites or servers. The file /etc/resolv.conf shows the nameserver is set to 127.0.0.53 What’s happened here is that the traditional DNS resolution system has been replaced by the systemd name resolution system.

Audacity Recording Problems Choosing an Input Source on Linux Mint

Nov 29, 2021

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johnk

in Uncategorized

Symptoms: Audacity is unable to get any input from the audio output or microphone. System uses PulseAudio and ALSA.

WP-CLI: wp wc product update images

Jul 24, 2021

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by

johnk

in Uncategorized

I’m running WordPress inside a Docker container, and wanted to control the website with command lines, and code. The two options are to use the REST API, or to use the WP-CLI interface. I opted for the CLI because I assumed it was faster. I suspect I’m wrong, but I’m sticking with it for now,…

Run a Shiny Server with the rocker/shiny and Docker-Compose on Debian or Ubuntu

May 1, 2021

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johnk

in Uncategorized

How to set up Ubuntu to run Docker, a Shiny Server container, with an existing Apache proxy server configuration. This setup will work for a low-volume application. It runs a single container, on a single host.

Crossplatform Keyboard Mappings for MacOS, GNOME, and Windows

Apr 14, 2021

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by

johnk

in System Administration

I use all three types of computers, and use the following mapping to make it easier to move between computers. Most of my software development has moved into a server in the cloud, and I SSH in. Even locally, I often use a Terminal session. My local Linux environment is GNOME, but this may also…

How to Buy Windows 10 Cheap

Apr 8, 2021

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johnk

in Windows

Not buying Windows 10 at all may be the least expensive way.

Set Up an HP P1102w Printer on Ubuntu Linux

Sep 15, 2020

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by

johnk

in Linux

Introduction – This is a specific guide to setting up the computer on my own network. I’m writing it because, every time there’s some weird network problem, I change a password or something, and foul up the network, and cause the printer to drop off. Then I end up spending a couple hours fixing my…

Using Flatpaks, Doctrine ORM is Meta, Talking Union, and Indexing Free Blogs

Feb 14, 2020

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by

johnk

in Uncategorized

What are the best free blogging sites? I don’t know, but decided to see which platforms were best indexed on Google. Not surprised to find that Google’s own Blogger.com had the most pages. These are the results from using the Google search “site” filter.

WordPress AntiSpam Plugin, Configuring Alpine Linux to Send Mail

Dec 14, 2019

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by

johnk

in Uncategorized

The previous incarnation of this blog had a lot more inbound links, and accumulates spam. One day, I had 14,000 comments pending, and most were spam. So, I wrote a tool to help work through the backlog.