# libtmux.Server.set_buffer

- **Module:** libtmux.Server
- **Package:** libtmux
- **Language:** Python
- **Kind:** method
- **Source:** https://github.com/tmux-python/libtmux/blob/036c521c4b83ce6e434eb50afe2a0d08a6a05e46/src/libtmux/server.py#L1808
- **Page:** https://libtmux.org/reference/py/libtmux-server-set_buffer/

```
libtmux.Server.set_buffer(self, data: str, buffer_name: str | None = None, append: bool | None = None) -> None
```

Set a paste buffer via ``$ tmux set-buffer``.

## Parameters

- `self`
- `data` (str) — Data to store in the buffer.
- `buffer_name` (str | None) — Name of the buffer (``-b`` flag).
- `append` (bool | None) — Append to the buffer instead of replacing (``-a`` flag).

## Example

```python
>>> server.set_buffer('hello')
>>> server.show_buffer()
'hello'
```