Enable Disable Mobile Broadband – How to Enable/Disable Mobile Broadband from Terminal

11.04command linemobile-broadbandnetwork-manager

I use ZTE USB Modem on Natty Narwhal. Every thing works fine but sometimes it get disconnected. I want to write Shell script that reconnects mobile broadband if it is disconnected or the received data is less than 20 KB after 5 seconds of connection.

So my question is how to enable/disable mobile broadband? How to check for data received? and how to enable/disable network service ?

note: terminal commands only
Or if you can write script, I'll be very thankful.

Best Answer

Open terminal window and type:

sudo gedit /etc/init.d/mobile-broadband-connect

Then copy and paste this (Change for your needs):

Note: Replace the <Your Mobile Broadband Connection Name Here> with the name of your connection.

#!/bin/bash

case "$1" in
start)
      echo "Starting Mobile Broadband Connection."
      while true; do
        # testing...to see if gsm is on the list of active devices
        LC_ALL=C nmcli -t -f TYPE,STATE dev | grep -q "^gsm:disconnected$"
        if [ $? -eq 0 ]; then
            break
        else
         # not connected, sleeping for a second
            sleep 1
        fi
      done
      # now once GSM modem shows up, run these commands
      nmcli -t nm wwan on
      nmcli -t con up id <Your Mobile Broadband Connection Name Here>
;;
stop)
      echo "Stopping Mobile Broadband Connection."
      nmcli -t con down id <Your Mobile Broadband Connection Name Here>
      nmcli -t nm wwan off
;;
status)
      # Check to see if the process is running with Network Manager dev status
      nmcli -p dev
;;

*)
      echo "Mobile Broadband Startup Service"
      echo $"Usage: $0 {start|stop|status}"
      exit 1
esac
exit 0

Change the permissions of this file for execution:

sudo chmod +x /etc/init.d/mobile-broadband-connect

To run this script has a service, do:

sudo update-rc.d mobile-broadband-connect defaults

The script is registered as a system startup service so you can start, stop, or check the status of the script with :

sudo service mobile-broadband-connect start

sudo service mobile-broadband-connect stop

sudo service mobile-broadband-connect status

Reboot to complete installation and auto connect.

  • Reboot your system to complete the installation.
  • After reboot it takes up to 60 seconds before the USB device is active.
  • When active - The Mobile Broadband Connection will be activated and auto connected.

Done ...

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