vboxmanage
Interface with VirtualBox. tldr-pages
On several platforms
Several platforms
Interface with VirtualBox. Includes all the functionality of the GUI and more. Some subcommands such as startvm have their own usage documentation.
List all VirtualBox virtual machines
VBoxManage list vmsIdentifyShow information about a particular virtual machine
VBoxManage showvminfo nameIdentifyStart a virtual machine
VBoxManage startvm nameIdentifyStart a virtual machine in headless mode
VBoxManage startvm name --type headlessIdentifyShut down the virtual machine and save its current state
VBoxManage controlvm name savestateIdentifyShut down the virtual machine without saving its state
VBoxManage controlvm name poweroffIdentifyUpdate VBox extension packs
VBoxManage extpack install --replace VboxExtensionPackFileNameIdentifyDisplay help
VBoxManage --helpIdentify