# uid

Source: https://libtmux.org/en/tmux/3.7c/catalog/formats/uid/

> Server UID

format variable tmux3.7c

Server UID

* Scope

  Describes the server being formatted

* Type

  Text

* Usage

  `#{uid}`

## Description[#](https://libtmux.org/en/tmux/3.7c/catalog/formats/uid/#description)

Server UID

## Releases[#](https://libtmux.org/en/tmux/3.7c/catalog/formats/uid/#releases)

* [tmux 3.7c](https://libtmux.org/en/tmux/3.7c/catalog/formats/uid/) : present
* tmux 3.2a : not present

## Source[#](https://libtmux.org/en/tmux/3.7c/catalog/formats/uid/#source)

* Defined in

  [`format.c:3653`](https://github.com/tmux/tmux/blob/e476c1230b958df0cb12977517d24b3dc931375b/format.c#L3653)

* C source reference

  [`format_cb_uid`](https://libtmux.org/en/tmux/3.7c/reference/c-function-format-c-format_cb_uid/)

* CLI Manual

  [Original manual entry](https://libtmux.org/en/tmux/3.7c/manual/full/#uid)