Not sure if this one is already common knowledge, but I thought I’d share an interesting tool I recently discovered. Vagrant is a CLI wrapper for various virtualization providers (VirtualBox, libvirt, etc), that allows you to spin up and tear down VMs based on predefined “boxes” (sort of analogous to Docker images). Saves a ton of time running OS installers from isos. Seems really good for use cases where VM longevity isn’t really a factor. I’ll be using it to experiment/break things while studying for certs.