This project is a simple implementation of a text search tool, inspired by the grep command-line utility.
It was created as part of learning exercises from The Rust Programming Language Book, Chapter 12.

• Search for a query string in a file.
• Case-sensitive and case-insensitive search options.
• Basic command-line argument parsing.

# Basic usage
cargo run -- <query> <filename>

# Case-insensitive search
CASE_INSENSITIVE=1 cargo run -- <query> <filename>