Instead of files you can also turnin your directory.
Whenever you submit a file, it gets time stamped.
Confirmation
You can see whether the submission was successful or not by giving the
command:
turnin -list <grader> <project-name>
This should show the list of files which got submitted.
Example
If you want to submit the files: README, Timer.h, Date.h,
main.c, main.in and main.out for
the assignment cs354_project1_code and grader smpark then give
the following command:
turnin -submit smpark cs354_project1_code README Timer.h Date.h main.c main.in main.out
You need not submit the files all at once; you may use the command
repeatedly to submit different files.
Then to confirm, type:
turnin -list smpark cs354-project1
Caution
If you submit a file a second time, then the previous file and its time
stamp will get over-written.
Once submitted, you can't undo your submission (although you can
overwrite any file).