# LibTmux::Server.capabilities

- **Module:** LibTmux
- **Package:** LibTmux
- **Language:** Raku
- **Kind:** method
- **Source:** https://github.com/libtmux/libtmux-raku/blob/e76160bcce6e03976d49424da15b7c31afb2c68e/lib/LibTmux/Server.rakumod#L383
- **Page:** https://libtmux.org/en/raku/latest/reference/libtmux-server-capabilities/

```
method capabilities(Cancellation :$cancel = Cancellation --> LibTmux::Capabilities:D)
```

Observe the daemon's capabilities explicitly; this performs tmux I/O.

Observe the daemon's capabilities explicitly; this performs tmux I/O.

## Parameters

- `$cancel?` (`Cancellation`)

## tmux command

The tmux commands behind `capabilities`.

- [`run-shell`](/en/tmux/latest/manual/run-shell/)

## tmux C API

The C declarations in tmux that implement these commands.

- [`cmd_run_shell_entry`](/en/tmux/latest/reference/c-variable-cmd_run_shell_entry/) (attribute)
- [`cmd_run_shell_exec`](/en/tmux/latest/reference/c-function-cmd-run-shell-c-cmd_run_shell_exec/) (function)

## In other ports

Which tmux this server runs

| Language | Equivalent |
| --- | --- |
| Python | no equivalent on `Server` |
| Erlang | [`tmux_server:version/1`](/en/erlang/latest/reference/tmux_server-version-1/) (function) |
| Haskell | No public Haskell equivalent is implemented; the current modules expose scalar values and version parsing. |
| TypeScript | [`server.Server.version`](/en/ts/latest/reference/server-server-version/) (method) |
| Rust | no equivalent on `Server` |
| Go | [`tmux.Server.Version`](/en/go/latest/reference/tmux-server-version/) (method) |
| Java | [`io.github.libtmux.Server.version`](/en/java/latest/reference/io-github-libtmux-server-server-version/) (method) |
| C# | [`LibTmux.Server.Version`](/en/csharp/latest/reference/libtmux-server-version/) (property) |
| C++ | `Server::tmux_version` asks the executable with `tmux -V` without reaching a server |
| Swift | [`Server.version()`](/en/swift/latest/reference/server-version()/) (method) |
| OCaml | [`Libtmux_unix.Client.version`](/en/ocaml/latest/reference/libtmux_unix-client-version/) (function) |
| Perl | Read the acquired snapshot metadata version; the core has no standalone live version getter. |

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