startvm.ps1

$vmname = $one

function Show-VM-Info {
    & "C:\Program Files\Oracle\VirtualBox\VBoxManage.exe" showvminfo $vmname
}

function VM-Powered-off? {
    Show-VM-Info | Select-String State: | Select-String -quiet 'powered off'
}

function Start-VM {
    & "C:\Program Files\Oracle\VirtualBox\VBoxManage.exe" startvm $vmname --type gui
}

function List-VM {
    & "C:\Program Files\Oracle\VirtualBox\VBoxManage.exe" list vms
}

function VM-Exist? {
    return (List-VM | Select-String -quiet $vmname)
}

if (-Not (VM-Exist?)) {
    echo "[error] '$vmname' is not exists."
    exit 1
}

if (VM-Powered-off?) {
Start-VM
} else {
    echo "VM: '$vmname' has been powered on."
    exit 1
}