A neat tool for communicating with your Beta camera via serial port is
Check if you already have minicom installed on your system by trying to run it:
Your system will respond with a message like
bash: command not found: minicom if it's not installed.
Install the minicom package like you'd install other software on your system – which could be via a GUI tool or using
apt-get (for wich you might need super user rights), e.g.:
$ apt-get install minicom
$ sudo apt-get install minicom