DuckCorp Dico

Found one definition

1.                 From The Free On-line Dictionary of Computing (19 January 2023):
                   
   
   
                   
                     
   bang
      <character> A spoken name for the exclamation mark character
      ("!" ASCII	33) when used as a piece of technical syntax (e.g.
      in a bang path) rather than to mark a command or exclamation.
      [Jargon File]
      (1995-01-31)