cybern0id

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

How to mount a qcow2 disk image

This is a quick guide to mounting a qcow2 disk images on your host server. This is useful to reset passwords, edit files, or recover something without the virtual machine running.

Step 1 - Enable NBD on the Host

modprobe nbd max_part=8

tmux cheat sheet

(C-x means ctrl+x, M-x means alt+x)

Prefix key

The default prefix is C-b. If you (or your muscle memory) prefer C-a, you need to add this to ~/.tmux.conf:

remap prefix to Control + a


	1. On a phone that's still working:
	mount -o subvolid=0 /dev/mmcblk0p28 /mnt/

	2. On a Linux laptop:
	ssh jolla tar c /mnt/factory-@ >factory.tar
	ssh jolla tar c /mnt/factory-@home >factory-home.tar

	3. On the working phone again:
	umount /mnt

	#! /bin/sh
	set -e

	# grub-mkconfig helper script.
	# Copyright (C) 2006,2007,2008,2009,2010 Free Software Foundation, Inc.
	#
	# GRUB is free software: you can redistribute it and/or modify
	# it under the terms of the GNU General Public License as published by
	# the Free Software Foundation, either version 3 of the License, or
	# (at your option) any later version.

	git clean -xfd
	git submodule foreach --recursive git clean -xfd
	git reset --hard
	git submodule foreach --recursive git reset --hard
	git submodule update --init --recursive

	# $OpenBSD: pf.conf,v 1.52 2013/02/13 23:11:14 halex Exp $
	#
	# See pf.conf(5) for syntax and examples.
	#
	# Remember to set net.inet.ip.forwarding=1 and/or net.inet6.ip6.forwarding=1
	# in /etc/sysctl.conf if packets are to be forwarded between interfaces.

	### Macros

	# system

	<?php
	/*
	OCP - Opcache Control Panel (aka Zend Optimizer+ Control Panel for PHP)
	Author: _ck_ (with contributions by GK, stasilok)
	Version: 0.1.7
	Free for any kind of use or modification, I am not responsible for anything, please share your improvements

	* revision history
	0.1.7 2015-09-01 regex fix for PHP7 phpinfo
	0.1.6 2013-04-12 moved meta to footer so graphs can be higher and reduce clutter

	Deface::Override.new(:name => "remove billing address form",
	:virtual_path => "spree/checkout/_address",
	:remove => "#billing[data-hook]"
	)

	Deface::Override.new(:name => "remove use billing address checkbox",
	:virtual_path => "spree/checkout/_address",
	:remove => "[data-hook='use_billing']"
	)