VirtualBox. vboxmanage

Examples

Change guest screen resolution
VBoxManage controlvm "my_vm" setvideomodehint 1024 768 32

Enable VRDE
vboxmanage modifyvm "WAVE-l4" --vrdemulticon on --vrdeport 8005 --vrdeauthtype null --vrde on

Find VM IP
vboxmanage guestproperty get "Vm" "/VirtualBox/GuestInfo/Net/0/V4/IP"
Value: 172.16.221.128

Power off :
vboxmanage controlvm "auto" acpipowerbutton
or
vboxmanage controlvm "auto" poweroff

Reset:
vboxmanage controlvm "auto" reset|

Power on:
vboxmanage startvm "auto" --type headless