Copying large files with Rsync, and some misconceptions

Wrestling with the register allocator: LuaJIT edition

nbdkit supports exportnames

Update on Easy PXE boot testing post: minus PXELINUX

How to browse the hard drive from the terminal in Linux

How to Convert Video Formats on Linux

Chmod Command in Linux (File Permissions)

Interactive learning and reinventing the wheel in programming.

Rotate a video file by 90 degrees CW

RHEL 8 update installed packages for security

post modern C tooling - draft

Some of the C++ people have pulled off one of the cleverest and sneakiest tricks ever. They required 'modern' C99 and C11 features in 'recent' C++ standards. Microsoft has famously still clung onto some 80s version of C with their compiler for the longest time. So it's been a decade of hacks for people writing portable code in C. For a while I thought we'd be stuck in the 80s with C89 forever. However, now that some C99 and C11 features are more widely available in the Microsoft compiler, we can use these features in highly portable code (but forget about C17/C18 ISO/IEC 9899:2018/C2X stuff!!).

Reading and Writing YAML to a File in Python

In this tutorial, we're going to learn how to use the YAML library in Python 3. YAML stands for Yet Another Markup Language. In recent years it has become very popular for its use in storing data in a serialized manner for configuration files. Since YAML essentially is a data format, the YAML library is quite brief, as the only functionality required of it is the ability to parse YAML formatted files. In this article we will start with seeing how data is stored in a YAML file, followed by loading that data into a Python object. Lastly, we will learn how to store a Python object in a YAML file. So, let's begin. Before we move further, there are a few prerequisites for this tutorial. You should have a basic understanding of Python's syntax, and/or have done at least beginner level programming experience with some other language. Other than that, the tutorial is quite simple and easy to follow for beginners.

Python Multiple Inheritance (with Examples)

In this tutorial, we’ll describe Python Multiple Inheritance concept and explain how to use it in your programs. We’ll also cover multilevel inheritance, the super() function, and focus on the method resolution order. In the previous tutorial, we have gone through Python Class and Python (Single) Inheritance. There, you have seen that a child class inherits from a base class. However, Multiple Inheritance is a feature where a class can derive attributes and methods from more than one base classes. Hence, it creates a high level of complexity and ambiguity and known as the diamond problem in the technical world. We’ll be taking up this problem later in this tutorial.

Adding Methods Retroactively

Imagine you have a "shapes" library. We have a Circle class, a Square class, etc. A Circle has a radius, a Square has a side, and maybe Rectangle has height and width. The library already exists: we do not want to change it. However, we do want to add an area calculation. If this was our library, we would just add an area method, so that we can call shape.area(), and not worry about what the shape is.

Fedora Community Blog: GSoC summer 2019: Fedora Gooey Karma

The day GSoC projects list was published I started sorting out all the organizations that I’d enjoy working with. Being a Linux user/enthusiast I filtered down to a bunch of Linux distros and desktop managers. Sorting out all the projects, Fedora-Gooey-Karma seemed to be a project that suited the skills I have. Once I was sure that Fedora Gooey Karma is a project that I would love to work on during the summer, I mailed @sumantro about the project. We talked about the project on mails.

Fedora Community Blog: FPgM report: 2019-37

Here’s your report of what has happened in Fedora Program Management this week. Fedora 31 Beta is go! I have weekly office hours in #fedora-meeting-1. Drop by if you have any questions or comments about the schedule, Changes, elections, or anything else.

PHP version 7.2.23RC1 and 7.3.10RC1

Release Candidate versions are available in testing repository for Fedora and Enterprise Linux (RHEL / CentOS) to allow more people to test them. They are available as Software Collections, for a parallel installation, perfect solution for such tests (for x86_64 only), and also as base packages. RPM of PHP version 7.3.10RC1 are available as SCL in remi-test repository and as base packages in the remi-test repository for Fedora 30-31 or remi-php73-test repository for Fedora 29 and Enterprise Linux. RPM of PHP version 7.2.23RC1 are available as SCL in remi-test repository and as base packages in the remi-test repository for Fedora 29 or remi-php72-test repository for Enterprise Linux.

Karsten Hopp: Onboarding Fedora Infrastructure

I'm using / working on Fedora since FC-1 and just recently joined the Infrastructure team.

Fedora Community Blog: Fedora 31 Gnome Test Day 2019-09-18

Wednesday, 2019-09-18 is the Fedora 31 Gnome Test Day! As part of changes Gnome 3.34 in Fedora 31, we need your help to test if everything runs smoothly!

EPEL Bug: Bash errors on recent EL-8 systems.

Last week, I got asked about a problem with using EPEL-8 on Oracle Enterprise Linux 8 where trying to install packages failed due to bad license file. I duplicated the problem on RHEL-8 which had not happened before some recent updates.

Linux 5.4 To Fix Many Newer 64-bit Windows Games On Wine / Steam Play

A kernel patch from CodeWeavers is landing in the Linux 5.4 kernel and will help some 64-bit Windows games run nicely under Wine (and the likes of CrossOver / Valve's Proton) with newer Intel and AMD systems. With the few x86 Assembly patches for Linux 5.4 is a UMIP addition by CodeWeavers' Brendan Shanks that ends up being quite important for running a number of Windows games under Proton/Wine on newer AMD/Intel Linux systems.

You may want to hold off on Linux Kernel 5.3 and systemd 243 if you use a gamepad

Did you do a big system upgrade recently and notice you're having gamepad issues? You're not alone. Time to downgrade perhaps. To be clear this might only be an issue for the more bleeding-edge distributions which update more often, or those of you who are doing some manual updates to their system. The distributions that update more slowly like Ubuntu are likely unaffected right now.

Cascade – a turn-based text arcade game

I wrote this game about 20 years ago. Glad to see it still compiled out of the box on the latest Linux distro! Download it from here. If anyone can remember the name or any details of the original 1980s MS-DOS game that I copied the idea from, please let me know in the comments.