[Unit]
Description=Configure grubserial
ConditionPathExists= /var/tmp/first-boot-nv-grubserial

[Service]
Type=oneshot
ExecStartPre=/bin/rm /var/tmp/first-boot-nv-grubserial
ExecStart=/usr/sbin/configure-nvidia-grubserial.bash

[Install]
WantedBy=multi-user.target