# LibTmux::CommandError#pid

- **Module:** LibTmux::CommandError#
- **Package:** libtmux
- **Language:** Ruby
- **Kind:** method
- **Source:** https://github.com/libtmux/libtmux-ruby/blob/c6d9d21771828e583692ca899ed817f9640d6a55/gems/libtmux/lib/libtmux/errors.rb#L5
- **Page:** https://libtmux.org/en/ruby/latest/reference/libtmux-commanderror-pid/

```
LibTmux::CommandError#pid() -> ::Integer?
```

Returns the value of attribute pid.

Behavior contract: Errors.