Grep Clone

Implementation of https://doc.rust-lang.org/book/ch12-00-an-io-project.html

This is a toy project that works by supporting searching for a string in a file.

Usage: grep-clone string file.txt

It also supports ignore-case grep-clone string file.txt -i

Or mini-grep string file.txt --ignore-case

Or export IGNORE_CASE=true mini-grep string file.txt