Lab 8: Osh I

Due: 2026-04-13 at 23:59

In this lab and the next, you’re going to implement a simple shell named Osh. The shell will be able to

1. Run simple commands like wc -l some/file
2. Run pipelines containing an arbitrary number of commands.

You will learn

• one way to parse input;
• how to model a pipeline; and
• how to run programs and wait for them to complete.

Preliminaries

First, find a partner. You’re allowed to work by yourself, but I highly recommend working with a partner. Click on the assignment link. One partner should create a new team. The team name cannot be the same name used for a previous lab. The second partner should click the link and choose the appropriate team. (Please don’t choose the wrong team, there’s a maximum of two people and if you join the wrong one, you’ll prevent the correct person from joining.) You cannot choose a team name you’ve used previously.

Once you have accepted the assignment and created/joined a team, you can clone the repository and begin working.

Compiler warnings and errors

Make sure your code compiles and passes clippy without errors or warnings. That is, running

$ cargo clean
$ cargo build
$ cargo clippy

should build your program without errors or warnings.

Formatting

Your code must be formatted by running cargo fmt.