Oracle VM VirtualBox
VirtualBox Ubuntu Shared Folder
VirtualBox allow you to create Virtual Machines. This is useful for testing.
Here is some useful CLI commands
To list all VMS
vboxmanage list vms
To list currently running vms
vboxmanage list runningvms
To start a VM
vboxmanage startvm VM_NAME_OR_ID
To start a VM in background
vboxmanage startvm --type headless VM_NAME_OR_ID
To poweroff a VM
vboxmanage controlvm VM_NAME_OR_ID poweroff