# libtmux.Server.set_buffer

- **Module:** libtmux
- **Package:** libtmux
- **Language:** Python
- **Kind:** method
- **Source:** https://github.com/tmux-python/libtmux/blob/38e368c11117fb4aeb2f082d552cd4f210eae06a/src/libtmux/server.py#L1805
- **Page:** https://libtmux.org/en/py/stable/reference/libtmux-server-set_buffer/

tmux command: [`set-buffer`](/en/tmux/latest/manual/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`](/en/tmux/latest/manual/set-buffer/).

## Examples

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

## Parameters

- `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).

## In other ports

### Put text into a paste buffer

- Ruby: [`LibTmux::Server#write_buffer`](/en/ruby/latest/reference/libtmux-server-write_buffer/) (method)
- Lua: [`libtmux.Server:set_buffer`](/en/lua/latest/reference/libtmux-server-set_buffer/) (method)
- TypeScript: [`server.Server.setBuffer`](/en/ts/latest/reference/server-server-setbuffer/) (method)
- Rust: [`server.Server.set_buffer`](/en/rs/latest/reference/server-server-set_buffer/) (method)
- Go: [`tmux.Server.SetBuffer`](/en/go/latest/reference/tmux-server-setbuffer/) (method)
- C#: [`LibTmux.TmuxBuffers.SetAsync`](/en/csharp/latest/reference/libtmux-tmuxbuffers-setasync/) (method)
- C++: [`libtmux::Server::set_buffer`](/en/cxx/latest/reference/libtmux-server-set_buffer/) (method)
- Swift: [`Server.setBuffer(_:named:)`](/en/swift/latest/reference/server-setbuffer(_-named-)/) (method)