# LibTmux::Pane#copy_command

- **Module:** LibTmux
- **Package:** libtmux
- **Language:** Ruby
- **Kind:** method
- **Source:** https://github.com/libtmux/libtmux-ruby/blob/da7b6191b9439e3c84fa1c9eeaa9168263ee7af4/gems/libtmux/lib/libtmux/operations.rb#L419
- **Page:** https://libtmux.org/en/ruby/v0.1.1/reference/libtmux-pane-copy_command/

```
def copy_command: (
  ::String,
  *::String,
  ?timeout: ::Numeric,
  ?cancel: untyped
) -> ::LibTmux::CommandResult
```

Behavior: Copy mode.

Behavior contract: Copy mode.

## Parameters

- `arg1` (`::String`)
- `args` (`::String`)
- `timeout` (`::Numeric`)
- `cancel` (`untyped`)

## tmux command

The tmux commands behind `copy_command`.

- [`send-keys`](/en/tmux/latest/manual/send-keys/)

## tmux C API

The C declarations in tmux that implement these commands.

- [`cmd_send_keys_entry`](/en/tmux/latest/reference/c-variable-cmd_send_keys_entry/) (attribute)
- [`cmd_send_keys_exec`](/en/tmux/latest/reference/c-function-cmd-send-keys-c-cmd_send_keys_exec/) (function)