## Why A long-running unified exec process started with `tty: false` could not be interrupted via `write_stdin`: ordinary non-TTY stdin writes are rejected once stdin is closed, but an exact U+0003 payload should still map to a process interrupt. The interrupt should flow through the same process lifecycle path as a real signal so Codex preserves process-reported output and exit metadata instead of fabricating a Ctrl-C exit code or tearing down the session early. ## What Changed - Add `process/signal` to exec-server with `ProcessSignal::Interrupt` and an empty response. - Add a non-consuming `ProcessHandle::signal` path for spawned processes; on Unix it sends SIGINT to the process group and leaves terminate/hard-kill unchanged. - Route non-TTY U+0003 `write_stdin` through `process.signal(...)` instead of `terminate`, then let the normal post-write collection path drain output and observe exit. - Add exec-server coverage where a shell `trap INT` handler prints the signal and exits with its own code. - Add unified exec coverage where a `tty: false` process traps SIGINT, emits output, and exits with its own code. ## Validation - `just test -p codex-exec-server exec_process_signal_interrupts_process` - `just test -p codex-exec-server` - `just test -p codex-core write_stdin_ctrl_c_interrupts_non_tty_session`
Codex CLI is a coding agent from OpenAI that runs locally on your computer.
If you want Codex in your code editor (VS Code, Cursor, Windsurf), install in your IDE.
If you want the desktop app experience, run
codex app or visit the Codex App page.
If you are looking for the cloud-based agent from OpenAI, Codex Web, go to chatgpt.com/codex.
Quickstart
Installing and running Codex CLI
Run the following on Mac or Linux to install Codex CLI:
curl -fsSL https://chatgpt.com/codex/install.sh | sh
Run the following on Windows to install Codex CLI:
powershell -ExecutionPolicy ByPass -c "irm https://chatgpt.com/codex/install.ps1 | iex"
Codex CLI can also be installed via the following package managers:
# Install using npm
npm install -g @openai/codex
# Install using Homebrew
brew install --cask codex
Then simply run codex to get started.
You can also go to the latest GitHub Release and download the appropriate binary for your platform.
Each GitHub Release contains many executables, but in practice, you likely want one of these:
- macOS
- Apple Silicon/arm64:
codex-aarch64-apple-darwin.tar.gz - x86_64 (older Mac hardware):
codex-x86_64-apple-darwin.tar.gz
- Apple Silicon/arm64:
- Linux
- x86_64:
codex-x86_64-unknown-linux-musl.tar.gz - arm64:
codex-aarch64-unknown-linux-musl.tar.gz
- x86_64:
Each archive contains a single entry with the platform baked into the name (e.g., codex-x86_64-unknown-linux-musl), so you likely want to rename it to codex after extracting it.
Using Codex with your ChatGPT plan
Run codex and select Sign in with ChatGPT. We recommend signing into your ChatGPT account to use Codex as part of your Plus, Pro, Business, Edu, or Enterprise plan. Learn more about what's included in your ChatGPT plan.
You can also use Codex with an API key, but this requires additional setup.
Docs
This repository is licensed under the Apache-2.0 License.
