Quick one. If you need iperf on your ESXi server, you need to install an obscure, 3rd party package.
This post will quickly show how to set up an Ubuntu 18 in a virtual machine, install Docker and set up pgAdmin with a persistend volume.
This howto partly shows how to install pfSense, with the main focus on creating the boot USB stick.
The other day I caught a bug in one of my scripts, where I wanted to both act on the exit code of a command at the same time as I sent the output from it to a log file.
Sometimes you need to make a backup of an SD card with your favorite installation on it. This recipe will show you how to do this in the most efficient way on Apple, Mac OSX.