# LibTmux::Model::SessionRef.lock

- **Module:** LibTmux::Model
- **Package:** LibTmux
- **Language:** Raku
- **Kind:** method
- **Source:** https://github.com/libtmux/libtmux-raku/blob/0b5dd3d32e20f83a0069874e33eab0eb48f55962/lib/LibTmux/Model.rakumod#L165
- **Page:** https://libtmux.org/en/raku/latest/reference/libtmux-model-sessionref-lock/

```
method lock(--> Result:D)
```

Ask tmux to lock clients attached to this session.

Ask tmux to lock clients attached to this session.

## tmux command

The tmux commands behind `lock`.

- [`lock-session`](/en/tmux/latest/manual/lock-session/)

## tmux C API

The C declarations in tmux that implement these commands.

- [`cmd_lock_session_entry`](/en/tmux/latest/reference/c-variable-cmd_lock_session_entry/) (attribute)
- [`cmd_lock_server_exec`](/en/tmux/latest/reference/c-function-cmd-lock-server-c-cmd_lock_server_exec/) (function)

## In other ports

Lock every client attached to a session

| Language | Equivalent |
| --- | --- |
| Python | [`libtmux.Session.lock_session`](/en/py/latest/reference/libtmux-session-lock_session/) (method) |
| Haskell | No public Haskell equivalent is implemented; the current modules expose scalar values and version parsing. |
| TypeScript | no equivalent on `Session` |
| Rust | [`session.Session.lock`](/en/rs/latest/reference/session-session-lock/) (method) |
| Go | [`tmux.Session.Lock`](/en/go/latest/reference/tmux-session-lock/) (method) |
| Java | no equivalent on `Session` |
| C# | [`LibTmux.Session.LockAsync`](/en/csharp/latest/reference/libtmux-session-lockasync/) (method) |
| C++ | no equivalent on `Session` |
| Swift | no equivalent on `Session` |
| OCaml | No direct public OCaml equivalent is recorded for this operation. |
| Perl | No dedicated equivalent in the selected Perl surface. Explicit Server::cmd remains available for native tmux commands. |

No equivalent is recorded in Ruby, Lua, PowerShell, Julia, Erlang, Elixir, Common Lisp, Clojure, Kotlin, Scala or F#.