## Why Shell snapshot lifecycle state was split between `Shell` and `SessionServices`: `Shell` carried the receiver while session code exposed and forwarded the raw sender. That coupled shell identity to mutable snapshot state and made refresh, inheritance, and file lifetime harder to reason about. ## What changed - make each `Arc<ShellSnapshot>` represent one cwd-specific snapshot generation - store the active generation in `SessionServices` with `ArcSwapOption` - have construction start the background build and expose only a cwd-validated snapshot path - use `ShellSnapshotFile` ownership to delete snapshot files automatically - pass snapshot paths explicitly to shell runtimes instead of storing snapshot state on `Shell` - preserve inherited and in-flight generations by pinning their `Arc` while they are in use ## Test plan - `cargo check -p codex-core --lib` - `just test -p codex-core 'shell_snapshot::tests'` - `just test -p codex-core shell_command_snapshot_still_intercepts_apply_patch` - `just test -p codex-core shell_snapshot_deleted_after_shutdown_with_skills`
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.
