Taking advantage of the year-end and New Year holidays, I am working hard to set up a home server now. So I installed Ubuntu as the server OS. I was also considering CentOS.
When I was choosing an OS like a server, I suddenly thought. I've heard of "Linux-based" and "Linux distributions," but I'm often not sure. So, this time, I researched and summarized Linux for myself.
Here, what is "Linux" that you often hear in the first place? I summarized the question.
I was wondering if Linux has an OS without knowing anything, but it seems a little different.
Strictly speaking, the function that the word "Linux" refers to is the kernel, which is the core function of the OS. However, in the general usage category, it is often called "Linux" to refer to the distribution that packages the kernel and the system software that accompanies it.
Now that I have some idea of the definition of Linux, I've taken a closer look at the differences between kernels and distributions.
** ・ What is the Linux kernel ** The kernel is a function that acts as an intermediary between hardware and software. As a concrete usage, it is said that it is doing work such as how to allocate CPU resources for each application and determine the order of processing from the hardware.
More details can be found in Article here.
** ・ What is a Linux distribution? ** distribution means "distribution" in English. It packages other system software that makes up the OS, including the kernel. It is called distribution because it is in a distribution format that anyone can use.
Ubuntu and CentOS are also one of the packaged distributions.
Here's a quick summary of Linux.
There were many things that I didn't understand because I seemed to know it unexpectedly. Also, in the world of OS, such a simple summary does not fit at all.
I would be happy if I could explain just a part of that abyss.