[linux internals 01] what is linux?
What is Linux, really?
In this first episode of the Linux Internals series, we build the mental model behind Linux without starting with memorising commands.
You’ll learn what the Linux kernel actually does, how user space and kernel space are different, what a process is, why file descriptors matter, and how system calls let programs ask the kernel to do privileged work.
By the end, you’ll have the foundation for understanding Linux scheduling, memory, filesystems, networking, services, containers and more.
Chapters:
00:00 Linux is not just the terminal
00:30 User space vs kernel space
01:09 Programs vs processes
01:44 File descriptors and resources
02:17 System calls explained
02:54 What the kernel manages
03:25 Kernel vs Linux distribution
03:58 Recap: the four core ideas
Topics covered:
Linux kernel, user space, kernel space, processes, PID, file descriptors, system calls, Linux distributions, operating system internals.
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