rsync will transfer all files (one or more) in the source directory to the destination, when it is called in the way I have outlined.
Be careful with the the trailing slash, @asimpledeveloper. A trailing slash in the source directory causes rsync to copy only the contents of the source directory. Omitting the trailing slash causes rsync to copy both the directory name and its contents to the destination.
See https://devhints.io/rsync for more