pip3 install -r requirements.txt
./server.py
./client.py <port_no>
signup <username> <roll_number> <password>
login <username> <password>
join <groupname>
create <groupname>
senduser <username> <text/file> <text block/file path>
sendgrp <groupname> <text/file> <text block/file path>
list
quit