# catsh

A small (ish) shell written in ( \*hopefully ) modern C++.

![screenshot](screenshot.png)

Made while doing the codecrafters' shell implementation challenge -- but let's see I'll add stuff that I find interesting.
Given it's at ~1000 LOC the goal is still to keep it as small as possible, as part of that

- Almost no error handling on POSIX apis or otherwise
- Linux only
- Edge cases are intended to be unhandled wherever they are
- focus on "terse" modern cpp code and practices, even if they are not the most efficient
- Single file ( I don't think organisational splitting would be good here )

what we DO have is

- no external dependencies ( not even GNU readline ), except POSIX and C++ standard library
- support for pipelines, redirection, and background processes

> [dev notes](https://blog.ruiny.de/C++/Making-a-shell)

## Running

`make` wrapper over `cmake`

```sh
make build
make run
make clean
```