4lxprime/instabrute ? reverse-engineered prompt

Build me a simple Linux shell script that demonstrates how weak passwords can be detected in a safe local test setup. I want it to read a list of sample passwords from a file, try them against a mock login check or a local demo account system, and clearly report which ones are weak or successful so I can show why password reuse and short passwords are a problem.

Make it easy to run from the terminal with one command, and include a sample password list plus a short README that explains how to use it for learning only. If you need to look up current shell scripting best practices, go ahead and do that. Keep it lightweight, readable, and focused on education, with clear output and no risk of touching real online services.