Please copy all the files you want to submit into a single directory. Double check the files before submitting. It is fairly straightforward to submit your assignments as follows.
Use the following command to make a tarball:
[yourself@foobar] tar cvf <your_netid>.tar.gz <directory_to_be_submitted>
Turn in the resulting tarball using Blackboard.
[yourself@foobar] tar cvf jdoe.tar.gz ./hw1to make the tarball.