Taken from Steven Castellucci's testing and documentation of cgi scripts in labtest mode
His code takes input from the users' session and creates a directory for the user in /eecs/dept/course/2014-15/S/1030/mcTests (with owner:group being labtest:labtest) The cgi script is located in /eecs/dept/www/www.eecs.yorku.ca/course_archive/2014-15/S/1030/Test1

Labtest directory (in /eecs/dept/www/www.eecs.yorku.ca/course_archive/):
    .htaccess     770    labtest
    index.html    740    labtest
    labtest.cgi   770    labtest  <-writes to mc/Tests/Test1 (see below)
Submission directory (in dept/course/...):
    mcTests       770    labtest  <-710 should (in theory) suffice
    mcTests/Test1 770    labtest  <-MC answers are saved here

Note that the cgi script runs with the permission of the user labtest and group labtest so files are created likewise

Any apache logs are kept on the local host /tmp/{access,error}_log. Here is where you will check for any script errors