Scripts in this folder are ment to be called on the command line by either executing one of the shell wrappers 'seeddms-*' or by calling 'php -f -- <script options>'. If you run the adddoc.php script make sure to run in with the permissions of the user running your web server. I will copy files right into your content directory of your SeedDMS installation. Don't do this as root because you will most likely not be able to remove those documents from the web gui. If this happens by accident, you will still be able to fix it manually by setting the propper file permissions for the document just created in your content directory. Just change the owner of the document folder and its content to the user running the web server.
None of the scripts do any authentication. They all run with a SeedDMS admin account! So anybody being allowed to run the scripts can modify your DMS content.