QEMU Wrapper

QEMUwrap.sh

#!/bin/bash

MODE="$1"

# Image files
# FILE_ISO="CentOS-7-x86_64-NetInstall-2009.iso"
# FILE_IMG="centos7.qcow2"

FILE_IMG="centos8.qcow2"
# FILE_ISO="CentOS-8.3.2011-x86_64-boot.iso"

# FILE_IMG="ubuntu.qcow2"
# FILE_ISO="ubuntu-20.04.1-live-server-amd64.iso"

# VM properties
QEMU_BIN=qemu-system-x86_64
QEMU_MEM=8G
QEMU_CPU=4
QEMU_PRT=5555

# VM configuration
QEMU_BOX="-m $QEMU_MEM -smp $QEMU_CPU -enable-kvm"      # cpu and memory
QEMU_NIC="-nic user,hostfwd=tcp::${QEMU_PRT}-:22"       # ssh -p 5555 localhost
QEMU_3DG="-vga virtio"               # experimental 3D! add at end of QEMU_OPT
QEMU_OPT="$QEMU_BOX $QEMU_NIC"                          # options all put together

# VM disks
QEMU_DSK_DUO="-boot d -hda $FILE_IMG -cdrom $FILE_ISO"  # boot from ISO with HDD attached
QEMU_DSK_HDD="-boot c -hda $FILE_IMG"                   # HDD only
QEMU_DSK_ISO="-boot d -cdrom $FILE_ISO"                 # ISO only

if [[ $MODE == "install" ]]; then
    qemu-img create -f qcow2 $FILE_IMG 32G # create disk image
    $QEMU_BIN $QEMU_OPT $QEMU_DSK_DUO &
else
    $QEMU_BIN $QEMU_OPT $QEMU_DSK_HDD &
fi