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## Why BUGB-15601 showed that the Windows safe-command path had drifted from the generic Git classifier. The Windows-specific Git parser could classify a PowerShell-wrapped `git` command as safe as soon as it found a safelisted subcommand, without applying the generic checks for unsafe subcommand options such as `--output`, `--ext-diff`, `--textconv`, `--paginate`, or `cat-file --filters`. The generic classifier already models the Git command boundary and the read-only argument checks more carefully, so Windows should reuse that logic instead of maintaining a smaller parallel parser. ## What Changed - Extracted the existing generic Git classification logic into `is_safe_git_command`. - Updated `windows_safe_commands.rs` to call that shared helper for parsed PowerShell `git` commands. - Removed the Windows-only Git subcommand safelist, including the `cat-file` allowance that was part of the reported bypass. - Added a Windows regression test that keeps PowerShell-wrapped Git commands with side-effecting options classified unsafe. - Made the full-path PowerShell test discover the installed PowerShell executable instead of depending on one hard-coded `pwsh.exe` path. ## Verification - `cargo test -p codex-shell-command rejects_git_subcommand_options_with_side_effects` - `cargo test -p codex-shell-command git_global_override_flags_are_not_safe` - `cargo test -p codex-shell-command windows_powershell_full_path_is_safe -- --nocapture` Co-authored-by: Codex <codex@openai.com>
npm i -g @openai/codex
or brew install --cask codex
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
Install globally with your preferred package manager:
# 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.