# tmuxtest.PTYProcess.Write

- **Module:** tmuxtest.PTYProcess
- **Package:** github.com/libtmux/libtmux-go/tmux
- **Language:** Go
- **Kind:** method
- **Source:** https://github.com/libtmux/libtmux-go/blob/5f808882015a975a65acc7f9da5b3ff0d5cbdc91/tmux/tmuxtest/pty_process.go#L114
- **Page:** https://libtmux.org/reference/go/tmuxtest-ptyprocess-write/

```
tmuxtest.PTYProcess.Write(ctx: context.Context, input: []byte) -> (int, error)
```

Write sends terminal input to the subprocess within ctx. Writes are serialized and can be partial. A waiting caller may cancel before acquiring the writer, and an active write observes ctx cancellation.