I can't find it.Can anyone tell me?
Hello, This file is not part of the package. You must to create it. Please run the command $ man plowshare.conf for more information.
Why not create one when installation? Is this file 'optional' or not?
This file stores options given at command line. It's a custom file. The commands plowdown, plowup, plowdel and plowlist have their default options and don't need this file.