I have installed EBS and it is working perfectly; when I upload new document, it is send to file system. Now, I would like to send all previous documents that are stored in SP to file system. How can I do that?
Sharepoint has limited ways to bulk movement (in-out) of documents.
Either you can use the explorer view or you can use "Open with Windows Explorer" option directly from document library. You can also map the document library as network folder/shared drive on your workstation, and then bulk copy/paste the documents.
Alternatively you may also use the sharepoint web services to copy-paste the documents.