On an old machine running and old BSD OS, I must trigger an email is some keywords are coming in a log file.

since this is a very old machine, installation of packages is no more possible.

This blog post will show a simple way I've did it with only shell script

I'm using a brand new laptop (T14s) with a wifi driver not supported by several BSD systems. So, the workaround is to install a VM host and run your preferred OS inside a VM

This blog post will show you how this impact performances

The clock of your OpenBSD machine is managed by NTPD. But in some cases this is not sufficient

For those using lot of terminal windows on your laptop, I've build a small script showing the battery's usage. His percentage, if it's charging or discharging. Color change to inform that battery is going bellow 20%.

Everythin without leaving your usual terminal window ;)

Since OpenBSD 7.3 the installation process allow you to encrypt your whole disk.

This is a nice security feature that most persons will activate on their laptop. Your CPU will increase effort to encrypt and decrypt all those files residing on your systems.

I don't know the real impact, but I estimate (via a simple and empiric measure) that full encryption could add an extra charge of 25% on my machine and thus on my battery.

This blog is for persons having an old and/or weak battery laptops running OpenBSD.

I'm a big fan of Openbox and I use it since +10 years now. It's simple to use, has a low foot print. But it has tons of features

In this blog, I'm sharing a simple configuration aspect which facilitate my day to day.

I do not want to convince you between tiling window manager or standard window manager, but you will see that Openbox offers lot of features without touching a mouse.

After several years of doing upgrades, I discovered lot of unused files on my different system's folders: /usr/X11R6, /usr/lib, ...

What is really nice with OpenBSD is that "system" is totally separated from the user space.

In this blog I will present my method to clean up the "system" part, including firmware.

Despite the usual connection to a remote hosts, SSH can be used in several other cases. In this blog, I will present 3: proxy, tunnel and JumpServer.

I've build a DNS server which allow me to skip ads, and all those not funny informations. All devises use it as DNS profit from this functionality, mobiles, laptops, ...

This feature is so addictive, that when I must replace his hardware, we can feel how it's annoying to not have it.

I've decided to have 2 machines in a cluster allowing me to never stop the service even during maintenance.

This is really common in our professional servers with paying solutions.

This blog will explain how to it with OpenBSD.

Latest changes in ssh rejects ssh-rsa.