The idea here is that we use a Desktop PC for developing/debugging Raspberry Pi set-ups using qemu for emulating Rasperrby Pi.
qemu currently supports the following configurations:
I wrote a small tool to access QNAP snapshots from the Linux command line.
Pre-requistes:
/share/netcfg containing the file:read-only with root-squash.This integration is to control RFXtrx devices. I am using to control Somfy blinds and KlikAanKlikUit remotes.
RFXCOM RFXtrxSerialRFXtrx433XL - RFXtrx433XL, s/n: * - RFXCOMRemember to configure the RFXCOM unit before using it with Home Assistant as Home Assistant integration has …
To set-up a reverse proxy I took the following steps:
At the time of this writing I can't really confirm if the reverse proxy configuration for home assistant is working as I can't tell what IP …
This recipe is to authenticate users using a web server providing Basic HTTP authentication for it users.
This is useful if you want to consolidate users/passwords in a single system. So instead of managing users on Home Assistant you can have all users managed from a central location.
It …
I am busy moving away from my VeraEdge installation to a Home Assistant running on a Raspberry Pi 4. This is because it looks like the maker of the VeraEdge was bought and it is slowly being phased out.
For this I am using the following parts:
This recipe is for setting virtualization on a voidlinux desktop.
Use this setup script to set things up on void linux.
Note that virsh and virt-manager commands connect to different libvirtd
sessions by defauult.
virsh defaults to qemu:///session while virt-manager to qemu:///system.
It is better …
My ISP provider is KPN. They recently enabled IPv6 in my street. I was using before a IPv6 Tunnel Broker, starting with SixXS and after they went out, with Hurricane Electric. So naturally, I decided to switch to KPN's native IPv6 service.
They provide a /64 prefix, which is reasonable …
The point of this article is to document I workaround that I came up with to handle a HDMI KVM switch.
What happens is that if my Linux PC is turned on while the KVM switch is selecting the other PC, it fails to initialize the display, so when you …
PulseAudio is nowadays the default sound system in many Linux distributions. It lets you do a number of useful things.
PulseAudio comes with a handy command line utility pacmd to do a
number of things.
pacmd commandsThis article tries to supplement the nginx documentations regarding the auth_request module and how to configure it. In my opinion, that documentation is a bit incomplete.
The documentation for this module says, it implements client authorization based on the result of a subrequest.
This …
I made the switch to void linux. Except for compatibility
issues around glibc, it works quite well. Most compatibility
I have worked around with a combination of Flatpaks, chroots and
namespaces.
The high lights of void linux:
systemd …If you often mount and access a remote NFS share on your system, you will probably want to know how to improve NFS file access performance. One possibility is using file caching. In Linux, there is a caching filesystem called FS-Cache which enables file caching for network file systems such …
Development - travis cordova build - travis ionic build
Writing shell scripts leaves a lot of room to make mistakes, in ways that will cause your scripts to break on certain input, or (if some input is untrusted) open up security vulnerabilities. Here are some tips on how to make your shell scripts safer.
The simplest step is …
Windows system administration is very mouse driven and to reach all tools you need to browse through Windows explorer.
If you are like me and prefer to log on a limited privilege account and use Runas to perform admin tasks, you can open these consoles with the .msc file names …
This article goes over how to implement Single-Sign-On on Linux. It goes over the integration around the Kerberos service and the applications, like for example FireFox.
To make sure that this is working, login to your workstation …
This is a service that let's you get SSL certificates for HTTPS. These certificates are trusted by major browsers. See Let's Encrypt This is a barebones howto to get SSL certificates:
git clone https://github.com/letsencrypt/letsencrypt
cd letsencrypt
This contains the client software for let's encrypt.
./letsencrypt-auto certonly …I bought a HP Envy 4504. Overall I am happy with it. This is how I configure it so I can use with Linux.
This mini howto applies to ArchLinux, void linux and Centos/RedHat distributions.
Archlinux:
cups, hplip, python2, sane
Centos:
cups, hplip, hplip-gui, sane
Some optional dependancies …
This simple mini how-to goes over the configuration of a linux system so it can use a Kerberos Realm server for authentication.
rpm -qa | grep pam command and seeing whether the pam_krb5 rpm files …