# session_attached

Source: https://libtmux.org/en/tmux/latest/catalog/formats/session_attached/

> Number of clients session is attached to

format variable tmux3.7c

Number of clients session is attached to

* Scope

  Describes the session being formatted

* Type

  Text

* Usage

  `#{session_attached}`

## Description[#](https://libtmux.org/en/tmux/latest/catalog/formats/session_attached/#description)

Number of clients session is attached to

## Releases[#](https://libtmux.org/en/tmux/latest/catalog/formats/session_attached/#releases)

* [tmux 3.7c](https://libtmux.org/en/tmux/3.7c/catalog/formats/session_attached/) : present
* [tmux 3.2a](https://libtmux.org/en/tmux/3.2a/catalog/formats/session_attached/) : present

## Source[#](https://libtmux.org/en/tmux/latest/catalog/formats/session_attached/#source)

* Defined in

  [`format.c:3575`](https://github.com/tmux/tmux/blob/e476c1230b958df0cb12977517d24b3dc931375b/format.c#L3575)

* C source reference

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

* CLI Manual

  [Original manual entry](https://libtmux.org/en/tmux/latest/manual/full/#session_attached)

## Used by[#](https://libtmux.org/en/tmux/latest/catalog/formats/session_attached/#used-by)

Library documentation that names this format variable.

* Go

  [`tmux.FormatValues.SessionAttached`](https://libtmux.org/en/go/latest/reference/tmux-formatvalues-sessionattached/), [`tmux.Session.Attached`](https://libtmux.org/en/go/latest/reference/tmux-session-attached/)

* C#

  [`LibTmux.Server.GetClientsAsync`](https://libtmux.org/en/csharp/latest/reference/libtmux-server-getclientsasync/), [`LibTmux.Session.Attached`](https://libtmux.org/en/csharp/latest/reference/libtmux-session-attached/)

* C++

  [`libtmux::Session::attached`](https://libtmux.org/en/cxx/latest/reference/libtmux-session-attached-a5b8/)