Download gsm-ussd from here.
Originally Posted by trids
I have just tested in Ubuntu 10.10.
For anyone wanting to use this with a Cell C E1820 make the following changes installing (for version 0.3.3):
change line 45 to read:
sudo nano /usr/bin/gsm-ussd
change line 49 to read:
my $modemport = '/dev/ttyUSB3';
insert the following at line 349 (important!):
my @ussd_queries = ( '*101#' ); # Prepaid account query as default
change line 297 to read:
sudo nano /usr/bin/xussd