A script that run a test for your mp0.c with a directory structure of 20 file/dirs whose name length is 10.

1. put "test.c", "testgen.c" under user/ and "gentest.py" under xv6/
2. python gentest.py will generate new grade-mp0.py and test.c (included by testgen.c), and then run a docker exec make grade
3. Since this script uses sudo to run docker, you may be asked to type your password.