Debian 9,10 rc.local

Setup script:

#!/bin/bash

echo ‘[Unit]
Description=/etc/rc.local
ConditionPathExists=/etc/rc.local

[Service]
Type=forking
ExecStart=/etc/rc.local start
TimeoutSec=0
StandardOutput=tty
RemainAfterExit=yes
SysVStartPriority=99

[Install]
WantedBy=multi-user.target’ > /etc/systemd/system/rc-local.service

echo ‘#!/bin/sh -e
#
# rc.local
#
# This script is executed at the end of each multiuser runlevel.
# Make sure that the script will “exit 0” on success or any other
# value on error.
#
# In order to enable or disable this script just change the execution
# bits.
#
# By default this script does nothing.

exit 0’ > /etc/rc.local

chmod +x /etc/rc.local
systemctl enable rc-local

https://www.adminsehow.com/2019/10/how-to-add-rc-local-in-debian-9-10/
https://www.troublenow.org/752/debian-10-add-rc-local/