Rename SWC Sensor on first boot

README.txt

Create the two files (sudo nano <filename>):
* /opt/obsrvbl-ona/set_ona_name.sh
* /etc/systemd/system/set_ona_name.service

Make the first script executable:
sudo chmod +x /opt/obsrvbl-ona/set_ona_name.sh

Enable the service:
sudo systemctl enable set_ona_name.service

Turn off the machine and clone it.

set_ona_name.service

[Unit]
Description=Rename SWC Sensor

[Service]
Type=oneshot
ExecStart=/opt/obsrvbl-ona/set_ona_name.sh

[Install]
WantedBy=multi-user.target

set_ona_name.sh

#!/bin/sh


if [ ! -f "/opt/obsrvbl-ona/ona_name_set" ]; then
    sed -i '/OBSRVBL_ONA_NAME/d' "/opt/obsrvbl-ona/config.local"
    echo "OBSRVBL_ONA_NAME=\"ona-$(date '+%Y-%m-%d %H:%M:%S.%N' | sha256sum | base64 | head -c 6)\"" >> "/opt/obsrvbl-ona/config.local"
    touch "/opt/obsrvbl-ona/ona_name_set"
fi