A Bash script to start, stop, and query status of a QEMU/virt-manager VM using virsh

apuevm.sh

#!/bin/bash

# Generated by Claude Haiku 3.5 at Duck.ai
# Modified by b3rts to make it work
# Script: apuevm.sh
# Purpose: Manage a QEMU/virt-manager virtual machine in "headless" mode

# Note: By default, virsh uses `--connect qemu:///session` forp VMs in the current user's session
#       I had to specify `--connect qemu:///system para` for system-level VM

# Virtual machine name
VM_NAME="apue-netbsd"

# Function to check VM status
check_status() {
    # use "list" without a VM name to list / status all VMs
    virsh --connect qemu:///system domstate "$VM_NAME"
}

# Function to start VM in headless mode
start_vm() {
    # the `--autodestroy` option seemed to prevent starting the VM
    virsh --connect qemu:///system start "$VM_NAME"
}

# Function to stop VM
stop_vm() {
    virsh --connect qemu:///system shutdown "$VM_NAME"
}

# Main script logic
case "$1" in
    "status")
        check_status
        ;;
    "start")
        start_vm
        ;;
    "stop")
        stop_vm
        ;;
    *)
        echo "Usage: $0 [status|start|stop]"
        echo "  status: List state of VM."
        echo "  start: Start VM in headless mode."
        echo "  stop: Stop VM."
        exit 1
        ;;
esac

exit 0