The accountbatch module is used to add/remove/modify user
accounts from an ASCII file. There were initially no command line
to trigger an update. There is now. All features available from the
dialog are now available from the command line. The man page
has been updated.
The option --update has been added and it has many sub-options.
--update [--test] [--silent] [--file path] [--group groupname ]
[--grouplow gid ] [--add ] [--del ] [--mod ]
[--archive ] [--delfiles ]