ADD FILE can be used to add a single file as well as a directory to the list of resources. The added resource can be listed using LIST FILE.
ADD FILE resource_name
The name of the file or directory to be added.
ADD FILE /tmp/test;
ADD FILE "/path/to/file/abc.txt";
ADD FILE '/another/test.txt';
ADD FILE "/path with space/abc.txt";
ADD FILE "/path/to/some/directory";