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Featured Video:
Watch on Youtube - [956//0] Online Course - Linux CLI Scripting - Episode9 - $nl command ↗

What is purpose of Kernel Development - Example SMOAD Networks SDWAN Orchestrator Firewall Kernel Engine ↗
Monday' 18-Jul-2022
Often aspiring students may have this question, that what is the purpose of Linux Kernel Development. Since Linux Kernel is very mature and it has almost everything one would need. Usually, we need custom kernel development in the case of any new driver development for new upcoming hardware. And this happens on and on. But at times we may also come across few features/modules/components which are already provided by the Linux Kernel which are not adequate or atleast not the way we exactly intended to use. So, this is the real-world example, sometimes no matter what Linux Kernel provides as a part of stock Kernel/OS features, sometimes we have to write our own custom kernel stack or module(s) which can specifically cater our exact needs.

Roadmap - How to become Systems Software Developer ↗
Friday' 13-May-2022
When you are at the beginning of your career or a student, and aspire to become a software developer, one of the avenues to choose is to become a hard-core Systems Software Developer. However it is easier said than done, since there are many aspects to it as you explore further. As a part of systems developer, you can get into core kernel space developer, kernel device drivers developer, embedded developer and get into things like board bring-up, porting, etc, or can become a user-space systems programmer, and so on. So here is my detailed multi-episode Youtube video series on Roadmap - How to become Systems Software Developer.

The Linux Channel :: Sponsors ↗
Monday' 30-May-2022
Here is a list of all The Linux Channel sponsors/donors (individual/companies).

Linux Kernel vs User-space - Library APIs - Linux Kernel Programming ↗
Tuesday' 17-Jan-2023
One of the important aspects a beginner who is into Linux Kernel space systems software development has to understand is that unlike user-space C/C++ programming, where you can freely include any library APIs via respective #include files (which are dynamically linked during run-time via those /lib .so files), in the case of Kernel space programming, these library APIs are written within the Kernel source itself. These are the fundamental APIs which we commonly use, such as memcpy(), memcmp(), strlen(), strcpy(), strcpy() and so on. So here is my detailed Youtube video episode on the same with live demo, walk-through and examples.

Linux Kernel Driver Device Trees ↗
Tuesday' 17-Jan-2023
The Linux kernel is the backbone of the Linux operating system. A device tree is a hierarchical tree structure that describes the various devices that are present in a system, including their properties and relationships to one another. The device tree is used by the Linux kernel to identify and initialize the different devices on a system, and to provide a consistent interface for interacting with them.

Linux Kernel /sysfs Interface ↗
Saturday' 14-May-2022
/sysfs is one of the most popular kernel to user-space interface which you can leverage to add an interface to your Kernel code such as Kernel modules, Kernel Device Drivers, etc. Although personally I prefer /proc interface than other alternatives such as /sysfs, ioctl() and so on for my personal Kernel modules/stack. So here is my detailed multi-episode Youtube video series on /sysfs Interface.

Rockchip ROC-RK3566-PC from Firefly | OpenWRT ↗
Monday' 23-Jan-2023
Here is my multi-episode video series on evaluation of Rockchip ROC-RK3566-PC from Firefly with stock OpenWRT firmware.

Support, Donate and Contribute - The Linux Channel ↗
Saturday' 13-Mar-2021
Help shape the future and make an impact by donating/sponsor The Linux Channel. Your donation will transform lives !

Research Socket overhead in Linux vs Message Queues and benchmarking ↗
Saturday' 13-Mar-2021

Linux Kernel Data-Structures ↗
Saturday' 13-Mar-2021
Here is a quick reference of important Linux Kernel Data Structures of various assorted Kernel Subsystems such as: Process, Memory Management, Networking, File System, Device Drives, IPC and so on. So when you write custom Kernel code, it is often you may need to populate a new instance of one of these data-structures or just access the existing ones. Hence it is very important to know some of these and get familiarized with. You can bookmark this page, so that you can use this as a quick reference when you write your own custom Linux Kernel Modules.


Trending Video:
Watch on Youtube - [1826//0] 322 - NIC Card Promiscuous Mode - Linux Kernel Architecture flow - Linux Kernel Networking Sub-system ↗

Code with Kiran - Live Coding | Linux Kernel Programming | Kernel Libraries ↗
Saturday' 01-Jan-2022
Here is a my multi-episode Youtube video series of me doing a live code (Code with Kiran Series). Linux Kernel source consists of many libraries within. For example such as to create and manage Linked Lists, String Operations, Encryption Algorithms, Compression Algorithms, and so on. In the Kernel, various Kernel Modules (including various Device Drivers) will use these Kernel inclusive Libraries. Unlike user-space programming, in Kernel Space when you code, you have to use these Libraries which are actually part of kernel (i.e sharing the same address space). And in some cases you can also make your own libraries and publish as well. In the case of user-space programs, we use third-party libraries (explicit or implicit), but that cannot happen when you code in kernel space. The libraries share the same address space and they are part of Linux Kernel mainline source. Hence it is important to understand the significance of using such library as demonstrated in my video series bel



Recommended Video:
Watch on Youtube - [466//0] x214 Raspberry Pi GPIO Pins | Raw Kernel Access via sysfs | GPIO Linux Kernel Drivers | Part-3 ↗