After having a good look at the top-down overview of how docker works. Let’s dive into the core concept by following the official docker workshop Docker: The tool/platform that manages everythin...

It works on my machine !!! I am using Fedora VM so I am following installtion on Linux guide for Docker Desktop. Under general requirement, it says Docker desktop depends on KVM virtualizatio...

I am hoping the struct concept is easier to wrap my head around than pointer. Pointer gave me PTSD and I still have difficulty sleeping at night. The only good thing came out of pointer, not for me...

A pointer is just a variable whose value is the address of another variable. Let’s introduce two variables: & (address of): give me the address of this variable * (dereference, in a decl...

Here I will introduce ideas like scope, separate compilation, and the preprocessor. Basic Structure of function: return-type function-name(parameter declarations) { declarations statements...

Variable names The conventions (not enforced, but expected) Underscore-leading names are conventionally avoided in your own code. Names starting with _ are often used by library implementations ...

C’s philosophy - “Don’t do anything the programmer didn’t ask for” I am reading the book The C Programming Language, 2nd Edition by K&R. As I was going through the preface of the book, I liked...

Here we will look at the relationship between process, the kernel and the system resources. The tools we will be discussing can be thought of as performance-monitoring tools. Tracking processes We...

Here we will start with the structure of /etc then we will move on to system logging, user management, cron job and working of PAM. The structure of /etc Everything in here is meant to be human-re...

Userspace “starts” at the exact moment the kernel successfully executes the first userspace program, called PID 1. Everything after that - services, login, networking - is launched by PID 1 (direct...