Vboxmanage: start stop vm
From OnnoCenterWiki
VBoxManage controlvm "VM name" acpipowerbutton sleep 30 VBoxManage modifyvm "VM name" --memory 512 VBoxManage startvm "VM name" sleep 60
VBoxManage controlvm "VM name" acpipowerbutton sleep 30 VBoxManage modifyvm "VM name" --memory 512 VBoxManage startvm "VM name" sleep 60