On Sat, 2020-12-19 at 08:36 -0400, George N. White III wrote:
On Fri, 18 Dec 2020 at 15:55, Kostas Sfakiotakis <kostassf@cha.forthnet.gr> wrote:

Can someone suggest a good book for Fedora ( well at least with systemd
) and one for bash a relatively recent one but please not just for bash
scripting .


It is usually a mistake to focus on a single distro and shell environment.   If you
plan to be around for a while you will encounter many changes, so a broader
perspective is useful.   I started on unix when the documentation was a binder
of reprints of papers by people at AT&T Bell Labs <https://dsf.berkeley.edu/cs262/unix.pdf>
and man pages.  Those early papers are still worth reading for perspective 
on the underlying reasoning behind the shell and utilities.   

In many fields, work is increasingly done by distributed groups working in 
different enterprises, each with different choices of Linux distro, so
linux users often need to understand differences between distributions.   As an
example, I developed and maintained a (very specialized) scientific application 
that started out with Fortran on a CDC Cyber, moved to Dec VAX, Ardent/Stardent 
UNIX, SGI IRIX, and then various linux distros, macOS, and (thanks to COVID-19, 
Cygwin) (all this was with a single employer).

The application uses a number of shell scripts that started out using ksh on IRIX, 
then bash for macOS and linux.  I recently updated the scripts to work with dash.   
Either I'm slowing down or the pace of change has been increasing.

I've owned many editions of UNIX and Linux System Administration, see 
<https://www.admin.com/samples/Index.pdf>.   

Also another question if i may ask , is there a way to monitor the boot
process on Fedora and see what get's written to the disk and if possible
where

( granted pressing the F1 button will pop up a message saying for
example  Starting the httpd daemon but a bit more detail on that if
possible ) ??


Most daemons have debugging options that provide more detail.  
UNIX and Linux System Administration has a good introduction, 
then you may need to read the detailed documentation for the 
version you are using.

If you haven't already done so, carefully review the Fedora 33 documentation at https://docs.fedoraproject.org/en-US/fedora/f33/, especially the Installation and System Administration guides. As I have just discovered with the TigerVNC application, this documentation may not be universally perfect. Stuff changes all the time. Buta, together with the bash PDF previously cited, these two guides should answer 99.99% of your Fedora questions.

--Doc Savage
    Fairview Heights, IL