Install libcw6 by entering the following commands in the terminal:
sudo apt update sudo apt install libcw6
Description:
Morse code tutor - shared library
The unixcw project provides support for learning to use Morse code. . This package provides shared library files to handle Morse code signals and to generate sound on the console buzzer or a sound card through OSS, ALSA or PulseAudio.
Homepage: http://unixcw.sourceforge.net/
Version: 3.5.1-2
Section: universe/libs