#!/usr/bin/env sh wget "https://dl-cdn.alpinelinux.org/alpine/v3.21/releases/x86_64/alpine-virt-3.21.3-x86_64.iso" alpine.iso if [ -f /dev/sda ]; then dd if=alpine.iso of=/dev/sda reboot elif dd if=alpine.iso of=/dev/vda reboot else exit 1 fi