# LibTmux::Server.start

- **Module:** LibTmux
- **Package:** LibTmux
- **Language:** Raku
- **Kind:** method
- **Source:** https://github.com/libtmux/libtmux-raku/blob/e76160bcce6e03976d49424da15b7c31afb2c68e/lib/LibTmux/Server.rakumod#L622
- **Page:** https://libtmux.org/en/raku/latest/reference/libtmux-server-start/

```
method start(:$name = 'main', :$binary = 'tmux', :$shell-command = Str,
             :$width = 80, :$height = 24, :$environment = %*ENV, :$cwd = $*CWD,
             :$timeout-ms = 10_000, :$max-output-bytes = 8 * 1024 * 1024,
             :$max-command-bytes = 12 * 1024, :$cancel = Cancellation)
```

Start an owned foreground daemon on a fresh private socket and create its first session.

Start an owned foreground daemon on a fresh private socket and create its first session.

## Parameters

- `$name?`
- `$binary?`
- `$shell-command?`
- `$width?`
- `$height?`
- `$environment?`
- `$cwd?`
- `$timeout-ms?`
- `$max-output-bytes?`
- `$max-command-bytes?`
- `$cancel?`

## tmux command

The tmux commands behind `start`.

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

## tmux C API

The C declarations in tmux that implement these commands.

- [`cmd_new_session_entry`](/en/tmux/latest/reference/c-variable-cmd_new_session_entry/) (attribute)
- [`cmd_new_session_exec`](/en/tmux/latest/reference/c-function-cmd-new-session-c-cmd_new_session_exec/) (function)

Each path starts at a function a command runs, which is degree 1. The degree counts steps from there along the path, and each step is a call or a reference: degree 2 is reached from that function, degree 3 from the next, and so on.

### Create a session and its first pane

1. [`cmd_new_session_exec`](/en/tmux/latest/reference/c-function-cmd-new-session-c-cmd_new_session_exec/) (function)
2. calls → [`spawn_window`](/en/tmux/latest/reference/c-function-spawn_window/) (function)
3. calls → [`spawn_pane`](/en/tmux/latest/reference/c-function-spawn_pane/) (function)
4. calls → [`window_add_pane`](/en/tmux/latest/reference/c-function-window_add_pane/) (function)
5. calls → [`window_pane_create`](/en/tmux/latest/reference/c-function-window-c-window_pane_create/) (function)

## In other ports

Start the server without creating a session

| Language | Equivalent |
| --- | --- |
| Python | [`libtmux.Server.start_server`](/en/py/latest/reference/libtmux-server-start_server/) (method) |
| Erlang | [`tmux_server:start_owned/1`](/en/erlang/latest/reference/tmux_server-start_owned-1/) (function). Starts a private daemon and returns an ownership token. |
| Haskell | No public Haskell equivalent is implemented; the current modules expose scalar values and version parsing. |
| TypeScript | no equivalent on `Server` |
| Rust | [`server.Server.start`](/en/rs/latest/reference/server-server-start/) (method) |
| Go | [`tmux.Server.Start`](/en/go/latest/reference/tmux-server-start/) (method) |
| Java | no equivalent on `Server` |
| C# | [`LibTmux.Server.StartServerAsync`](/en/csharp/latest/reference/libtmux-server-startserverasync/) (method) |
| C++ | no equivalent on `Server` |
| Swift | [`Server.startServer()`](/en/swift/latest/reference/server-startserver()/) (method) |
| 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, Elixir, Common Lisp, Clojure, Kotlin, Scala or F#.