Lab 9: Osh II
In this lab, you’re going to finish writing your shell. After this lab, your shell will
- support file redirection (e.g.,
$ echo foo >output.txt); and - handle the interrupt (Ctrl-C) and quit (Ctrl-\) signals.
You will learn
- how to launch processes with stdin/stdout/stderr connected to files;
- how to open files with more complex open options; and
- how to install signal handlers and respond to signals.
Preliminaries
Reuse your assignment repository from the previous lab. Because you are using your lab 8 repository, please make the your first commit message for lab 9 says “Lab 9 starts here.”
Be sure to ask any questions on Ed.
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.