After some try and error, I am invoking now an own startup script on a Teltonika RU950 router
opkg install nano nano —saveonexit /etc/rc.local source /etc/myscript.sh CTRL+x
and here is the script
touch /etc/myscript.sh chmod +x /etc/myscript.sh nano —saveonexit /etc/myscript.sh
sending the following variables
cellid=$(gsmctl -C) op=$(gsmctl -o) lac=$(gsmctl -A 'AT+CGREG?' | cut -d'"' -f 2) gsmctl —sms —send “0049********** @op @lac $cellid” CTRL+x