karson

SIM Card Management Over GSM Modem

A small guide on how to send and receive USSD codes on Linux

I am using the built in GSM (UMTS) modem of my Thinkpad X1 extensively because I am often in places with flaky internet connections. I connect through the standard Network Manager on Ubuntu and everything works fine. There was one major annoyance though. Every time I wanted to top up the SIM balance or book a new package, I needed a phone to send and receive USSD codes. So I took some time to figure out how to do it from the shell. I wrote this down as a help for others and a reminder for myself. Without further ado...

First intsall gammu and picocom.

➜  ~  sudo apt-get install -y gammu picocom

karson

<?php
/*
 * PHP: Recursively Backup Files & Folders to ZIP-File
 * (c) 2012-2014: Marvin Menzerath - http://menzerath.eu
*/

// Make sure the script can handle large folders/files
ini_set('max_execution_time', 600);
ini_set('memory_limit','1024M');

karson

/// write to file
var txtFile = "c:/test.txt";
var file = new File(txtFile);
var str = "My string of text";

file.open("w"); // open file with write access
file.writeln("First line of text");
file.writeln("Second line of text " + str);
file.write(str);
file.close();