A toy re-implementation of GNU Grep by Rust.

PeterWrght

Last update: Jul 15, 2022

Related tags

System tools mini_grep_rust

Overview

Mini Grep

Mini Grep is a simple rust re-implementation of GNU Grep, which means it could just implement limited functions, such as searching specific string in .txt file (Actually I have supply a test example, peter.txt).

Setup

Requirement

Because this program is written by Rust, and should be built by Cargo, Please check your requirements first before setting up.

Type following command to check Cargo:

$ cargo --version

Build

Type following script in your Terminal to build Mini Grep.

$ git clone https://github.com/PeterWrighten/mini_grep_rust.git

$ cd mini_grep_rust

$ cargo build

Mini Grep

Mini Grep has following features:

1. Search string in file: Case insensitive or not.

$ [CASE_INSENSITIVE=?] cargo run [query string] [filename]

You could test this by use my test file: peter.txt.

Example

Case insensitive search:

$ CASE_INSENSITIVE=1 cargo run am peter.txt

Case sensitive search:

$ cargo run am peter.txt

2. Output results into .txt file in root directory without error.

$ [CASE_INSENSITIVE=?] cargo run [query string] [filename] > [output filename]

Example

Stdout:

$ CASE_INSENSITIVE=1 cargo run am peter.txt > container.txt

Error:

$ cargo run > container.txt

Reference

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