Martin Vidner

On my machines I run openSUSE Leap ( download ), a stable distribution that follows the SUSE Linux Enterprise service packs. But frequentl...

At work I mostly program in Ruby, but our system ( YaST ) has a C/C++ part too. So I get to debug C crashes infrequently enough to forget ...

I had to apply a fix for a FCoE module in YaST , and I had no idea. After learning a couple of things I still only have a vague idea, but I...

So far we have seen Part 1: Building the First App , and Part 2: Publishing the first App . That Feeling When you build a brilliant piece ...

Here I simply describe what it takes to publish an Android application that I described in the previous part, Building the First App . Than...

Getting Started in Android Development: Part 1: Building the First App Do you know programming and want to start with the Android platform?...

A humanoid robot should be able to talk. So I looked around for some open source speech synthesis software. (The above video does featur...

I saw a couple of talks last week, and learned about several ways of automating Jenkins CI . The problem being solved is: if you automate ...

The Lego Mindstorms EV3 robots can be controlled with an Android app ( Lego Mindstorms Commander ) communicating with the brick via Bluetoo...

Say we have a robot with a USB connection and command documentation. The only thing missing is knowing how to send a command over USB. Let...

This is one of many ways to create a virtual machine. This way starts with a hard disk image. NAME=sles12sp2b4 IMG=https://example.com/ima...

Call-graph makes a call graph among methods of a single Ruby file. I made it to help me orient myself in unfamiliar legacy code and to hel...

You get a bug report from a user: /usr/lib/foo/bar.rb:432:in `doit': undefined method `[]' for nil:NilClass (NoMethodError) but ...

Can you spot the difference? Before:  After: If this rings a bell but you can't quite remember why, here's an English version...

As already announced on Factory , yast-devel , and by Lukáš : YaST, the SUSE installation and configuration tool, has been automatically tr...

After a problem with the organizers' equipment, kobliha's openSUSE laptop was used to watch the live stream from Skynet I/O Chrome k...

Use case: I want to create an appliance image for a build farm worker machine. I don't know its hardware configuration beforehand; in p...

dbus-dump is a tool to capture D-Bus messages in a libpcap capture file . It takes an idea from dbus-scrape , which processes a strace ou...

Root.cz recently ran an article (in Czech) about the n2n virtual private network sofware , an open alternative to Hamachi. I intend to use ...

This post is showing naked women packaged as a present (for openSUSE's 5th birthday) and asks Ah... who does not want such a gift, eh ....

I have upgraded my office workstation to openSUSE 11.3 today. Here I document the migration so that you don't have to repeat my mistakes...

I have made a bug-fix release of ruby-dbus , a Ruby language binding for the D-Bus IPC system . Many on_signal could cause DBus.Error.Limi...

Since the discussion (do check out the linked paper , BTW) and the opensuse-women announcement , I've been thinking about how to make t...

I have started working on kiwi2puppet , a tool to convert KIWI image descriptions to Puppet manifests. The goal is to recycle the data t...

ruby-dbus has for a long time not worked on the default Ubuntu desktop. I thought I had fixed it in 0.2.12 but that was only for the server...

[S]ometimes, when you are designing systems it is hard to realize that the circular friction reduction device with a central axis that you h...

Today I fixed a long-standing bug in ruby-dbus where a service activated by the bus would fail with "undefined method `get_node' f...

Article update: it turns out many people come here hoping to find a solution and are disappointed to find only problems that I encountered....

Got a question about the purpose of suse-ncc:x:106:110:Novell Customer Center User:/var/lib/YaST2/suse-ncc-fakehome:/bin/bash , and Google d...

Problem : After a reboot, /etc/resolv.conf says just # Generated by NetworkManager and the real data went to /etc/resolv.conf.netconfig . ...

We have released Beta 1 of WebYaST . Just to prevent misunderstandings, it is intended for appliances (and Beta 1 is an appliance, a VMX fo...

I've read A New Look at Test-Driven Development , a 7 page article by Dave Astels. He explains that what matters is to think of specific...