The fish shell is a command-line shell for Unix-like systems, written primarily in Rust with a modular crate architecture. It provides an interactive environment with syntax highlighting, autosuggestions, tab completions, and a scripting language. The core is in `src/` with builtins, parser, reader, history, job control, etc. External dependencies include PCRE2, nix, fluent for localization, and various Rust crates. The architecture is a single binary with many built-in commands and a large set of shell functions and completions. Key entry points: `fish` binary, `fish_indent`, `fish_key_reader`. Data flows: user input -> parser -> execution -> output. Completions are dynamically generated from shell functions and external command output. The project is actively maintained with a comprehensive test suite and CI/CD pipeline.
This is a Go application that runs an SSH server at jobs.hackclub.com, presenting Hack Club's open job positions as a virtual filesystem. Users connect via SSH and interact with a terminal-based shell supporting commands like `ls`, `cat`, `help`, and `exit`. Job listings are fetched from Polymer's hire API, converted from HTML to Markdown, and rendered in the terminal with support for light/dark themes, autocomplete, paging, and an animated intro sequence. The project is a playful developer-facing tool rather than a traditional web app or data pipeline.
clue/reactphp-stdio is a PHP library that provides async, event-driven console input & output (STDIN, STDOUT) for building truly interactive CLI applications. Built on top of ReactPHP, it implements a duplex stream that manages the complex interaction between asynchronous output and input redrawing, ensuring the user's input prompt and cursor position remain stable even when output occurs concurrently. The library handles UTF-8 input properly, provides features like customizable prompts, input echo control (including password masking), cursor positioning, command history, autocomplete/tab completion, custom key bindings, and bell signals. It takes care of proper TTY settings and restoration without requiring extensions, though it can utilize ext-mbstring for better performance and ext-readline for raw terminal mode when available.