This is the command listbasic that can be run in the OnWorks free hosting provider using one of our multiple free online workstations such as Ubuntu Online, Fedora Online, Windows online emulator or MAC OS online emulator
listbasic — Extract the BASIC from a ZX Spectrum file
listbasic extracts the BASIC listing from a ZX Spectrum snapshot or tape file and prints
it to standard output.
-b specifies that the program to list is a Beta BASIC program.
file specifies a snapshot or tape image from which to extract the BASIC, which must be
in a format supported by libspectrum(3).
Use listbasic online using onworks.net services