[development] Is it possible to upload FILE without a form ?

Dear All I am struggling to upload word documents to our drupal 7 site without having a form. It is easy when you have a form (just can use file_save_upload api), but think of a situation you have excel sheet at server, where 100 file names are mentioned, and you want to get the files one by one. In that case, how do we upload a file, and after upload how do I get the FID. Is it really possible with existing framework? Best regards austin