Questions about ftp backup scripts

For more information about ftp backup scripts-Linux general technology-Linux technology and application, see the following. The server is a win2003 server. I have installed the ftp server, and the backup server is linux. I want to write a script and perform regular automatic backup.
The problem now is that the server directory keeps adding backup files, history files are not deleted, and the file space is relatively large. I want to write a script,
The file name parameter after the get operation is read from a file, just like the pipeline, can it? How to write? Online waiting


If not, is there any other way? Objective: To back up new or unbacked files