todo.md

Client

1. Loading screen
2. Modify (the file would be loaded in the terminal fr the user to modify it, once the user finishes modifying the file the lock would be released)
3. upload (same name file cannot be uploaded)
4. superiority: modify -> write -> read
5. for the admin user make a new command to change the permission of the existing users and to add new users
6. Ncurses for the modify function

Server

1. Modify command
2. send/recv fix
3. make a module to handle the permission changing by the admin and adding new users