Starting to learn Linux...

[Deepak Goel]

Thank you very much for your response.

I have worked on unix/linux systems before developing shell/awk programs
and have a basic idea of hardware in computers/servers.

Now my second question is, how do I develop a small kernel from scratch by
myself. Very simple one initially for Arduino Uno. Is it possible?

Deepak
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On Tue, May 16, 2023 at 5:54 PM Valdis Klētnieks <valdis.kletnieks at vt.edu>
wrote:

> On Tue, 16 May 2023 12:42:19 +0530, Deepak Goel said:
> > I want to learn more about Linux.
>
> Step 0:
>
> Learn what a kernel is, and what userspace is.
>
> Figure out if you are trying to learn how to use/administer a Linux-based
> system, or how to write user programs that run on Linux-based computers, or
> learn about the Linux kernel itself.
>
> This may or may not be helpful, depending what you are trying to do:
>
> https://lists.kernelnewbies.org/pipermail/kernelnewbies/2017-April/017765.html
>
> > Is there a complete list of programs in Linux OS?
>
> No. And if there *was*, it wouldn't be very helpful.
>
> That's because Linux is used on everything from smart watches, to every
> Android-based device on the planet, to supercomputers, to the largest web
> services on the planet.  And what gets installed on any given Linux based
> system depends on what the designer and/or user wants included.
>
> Google *alone* has several billion (yes, with a 'b') lines of code that
> make up
> the programs that do all the magic for Google search, Gmail, Youtube, and
> all
> their other services.  And the last I heard, Google isn't sharing all those
> programs with the world.
>
> Then there's everything from genealogy programs, to programs that will
> handle
> the raw binary format images produced by Nikon cameras, to information
> security
> related software, to planetarium simulators, to text-to-speech software, to
> database servers, to totally niche things like the 'nmh' email software,
> which
> probably has less than 100 users worldwide these days. And that's just
> what's
> on my laptop.
>
> The end result is that as I write this, the Fedora Rawhide distribution of
> Linux includes around 25,000 available packages to install, many of which
> include multiple programs. That doesn't include programs available from
> third party sites.  And not all packages can be usefully installed on all
> systems - the
> programs for a Linux-based smart watch won't do anything useful on your
> desktop,
> while the desktop programs won't even *fit* in that smart watch.
>
> > And what do they do?
> See above.
>
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