Debian
Book about one of the oldest and arguably the most stable Linux distributions in existence.
Updates & Upgrades
Upgrading Debian 10 (Buster) to Debian 11 (Bullseye)
I am a big fan of Debian in the server environment, mainly due to its great record in stability, ...
Upgrading Debian kernel (5.4 to 5.10)
I have recently upgraded one of my Debian servers from 10 to 11. The main issue I ran into was th...
Upgrade Debian 10 to 11 (speedrun)
This is not supposed to be a quide, just a semi-public documentation of an update I performed on ...
Apt
Nginx
Collection of Nginx-related posts on my Debian server, might create a separate Book for Nginx in ...
Missing /etc/nginx folder
Not entirely sure how this might have happened, but I once SSHed into one of my servers to find o...
Hide Nginx version
Test if your website sends Server header When you make a request to a Nginx-powered website, by ...
Generate DH parameters (dhparam.pem)
One of the things we can do to improve the security of our website is to generate our own DH para...
Tips and tools
Edit /etc/passwd correctly
In my recent guides, you might have noticed that I sometimes edit /etc/passwd directly with vi or...
Create multiple parent directories with mkdir
You have a directory /home/mydir and you want to create two new directories like this: /home/mydi...
Make a Linux VM template unique
If you have ever worked with Virtual Machines (VMs), you are most likely familiar with the term "...