Grade System
Presented by Zhengte Cai
Overall Structure
Shell frontend
+
Web-like backend
Client Process
User interact with the system using shell.
Shell uses fork and execve to forward commands to the requesting program in the bin directory.
Server Process
Server registers functions in the specified path.
Request carry the path to the function. Server fork a process to response the request.
Expandability
All the function of the frontend and backend are independent of the main program, so as to realize the expandability of the system.
Admin
Capabilities
- View the directory tree
- Update user's information
- Update courses's information
- Backup and recover the file system
View the directory tree
use command tree to view the tree.
Update users's information
use command useradd edit user's information.
Update courses's information
use command courseadd edit courses's information.
Teacher
Capabilities
- Create a new chapter
- Create and Assign homework
- Check and Grade homework
Create new chapter
use command new to create chapters in order.
course directory
Create and Assign homework
use command vim to create homework template.
use command assign to assign homework.
homework template
A homework consists of multiple problems.
A problem consists of question, type, answer, score.
homework json format
box directory
The box directory is used to receive student's homework.
Check and Grade homework
use command check append with filename to check the student's homework.
Check students's grade
use command grade under course's dir to check students's grades.
Student
Capabilities
- Complete and Commit homework
- Review graded homework
- Check grade
student chapter directory
empty homework
Complete and Commit homework
use command vim to open homework.
use command commit to commit homework.
Answer
Extract the answers from the homework
Sent it to teacher's box.
student chapter directory
Review graded homework
use command check to open homework.
Check grade
use command grade under course's dir to check the grade.
vim
