I need the commands for the following request, in debian 11

8. (Shell scripting) Create a "sh" script in /usr/local/bin, as specified below: [20\%] i. Write a script that takes a folder argument, recursively searches for songs (those ending with .mp3, .ogg, .flac, or wav), and sorts them according to song length to the standard output. An extra flag determines whether sorting is done ascending or descending, but if the flag is missing, ascending is assumed. For each music file, a line is output containing the file name and song length. Install and make use of the third-party tool "mediainfo" to retrieve song lengths. Check arguments and show usage message if wrong arguments