# server.Server.setBuffer

- **Module:** server
- **Package:** libtmux
- **Language:** TypeScript
- **Kind:** method
- **Source:** https://github.com/libtmux/libtmux-ts/blob/073b9d7dedad900bff6f5ec0ea47794e40225870/packages/libtmux/src/server.ts#L1426
- **Page:** https://libtmux.org/en/ts/latest/reference/server-server-setbuffer/

```
setBuffer(name: string, data: string): Promise<void>
```

Put a string into a named paste buffer.

Empty data stores nothing. tmux exits zero for [`set-buffer -b name ""`](/en/tmux/latest/manual/set-buffer/) and
creates no buffer at all, so the name a caller thinks they just wrote is
absent — and they learn that from whatever reads it next, which points at
the wrong call. Check before storing content that may be empty.

## Examples

```ts
await server.setBuffer("greeting", "hello");
```

## Parameters

- `name` (`string`)
- `data` (`string`)

## tmux command

The tmux commands behind `setBuffer`.

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

## tmux C API

The C declarations in tmux that implement these commands.

- [`cmd_set_buffer_entry`](/en/tmux/latest/reference/c-variable-cmd_set_buffer_entry/) (attribute)
- [`cmd_set_buffer_exec`](/en/tmux/latest/reference/c-function-cmd-set-buffer-c-cmd_set_buffer_exec/) (function)

## In other ports

Put text into a paste buffer

| Language | Equivalent |
| --- | --- |
| Python | [`libtmux.Server.set_buffer`](/en/py/latest/reference/libtmux-server-set_buffer/) (method) |
| 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) |
| 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) |
| Java | no equivalent on `Server` |
| 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) |

No equivalent is recorded in PowerShell, Julia, Elixir, Kotlin, Scala or F#.