Script to generate unique machine ID for Linux Mint.

fix-machine-id.sh

#!/bin/bash
# Regenerate /etc/machine-id and delete IPv6 lease information.
# Use this script to ensure unique machine IDs on each machine
# after installing Linux Mint.
# See https://github.com/linuxmint/linuxmint/issues/126
# and https://github.com/linuxmint/linuxmint/issues/361
#
# Copyright (C) 2019-2023 by Jack Christensen and licensed under
# GNU GPL v3.0, https://www.gnu.org/licenses/gpl.html
#
# J.Christensen 02May2019

usage()
{
    PROGNAME=$(basename $0)
    echo "usage: sudo $PROGNAME" >&2
    return
}

# ensure we're root (sudo)
ROOT_UID=0
if [[ $UID != $ROOT_UID ]]; then
    echo "This script must be run with sudo."
    usage
    echo "Current machine ID: $(cat /etc/machine-id)"
    exit 1
# ensure we have no command line arguments
elif [[ $# -ne 0 ]]; then
    echo "Unexpected command line argument(s)."
    usage
    exit 1
else
    rm -v /var/lib/NetworkManager/dhclient6-*
    rm -v /etc/machine-id
    systemd-machine-id-setup
    read -p "Reboot now? [Y/n] "
    if [[ $REPLY == "Y" ]]; then
        shutdown -r now
    else
        echo "Script done."
    fi
fi