Please only submit text files through this interface. Plain tar files are OK if they contain only text files, but do not compress them -- just leave them as a simple tar file. Binary files will not be transferred correctly. Tar files should end in .tar, and will be automatically extracted.
If you need to submit binary files, use 'uuencode' to encode the file into a text-based version. The uuencoded file should be named with an extension '.uu'. If this is done, it will be automatically uudecoded. You can compress your binary file using 'gzip' prior to uuencoding it, and it will automatically be uncompressed. This will work for tar files as well (first tar your files, including the binary ones, then gzip it, then uuencode it). For example, t.uu containing t.tgz (or t.tar.gz) will be uudecoded, gunzipped, and then untarred.
A file that is resubmitted will overwrite any previous version, so you should only resubmit an assignment (especially a late one) if you are sure that you want the later one to be the submitted one.
NOTE: Please name your files the correct names. If you are uploading a C program, the file should end in ".c". Some submissions that are coming from PCs have C programs in files that end in ".txt". That is not good.
Note that when a file is successfully uploaded, an email message is sent to the student under whose name it was submitted, and information about when and where the submission was made is logged. Uploads that are malicious or incorrect will be detected.
If you do not receive an email confirmation of your upload, or if you receive a upload message when in fact you did not upload anything, please contact me as soon as possible.