# LibTmux::Server#run_group

- **Module:** LibTmux
- **Package:** libtmux
- **Language:** Ruby
- **Kind:** method
- **Source:** https://github.com/libtmux/libtmux-ruby/blob/d8ce4bbee0ca7748a81929f81f7d8d07f8c51267/gems/libtmux/lib/libtmux/group.rb#L32
- **Page:** https://libtmux.org/en/ruby/v0.1.0.alpha.3/reference/libtmux-server-run_group/

```
def run_group: (
  ::Array[::Array[::String]],
  ?input: ::String,
  ?timeout: ::Numeric,
  ?cancel: untyped
) -> ::LibTmux::GroupResult
```

One nontransactional tmux command group, with literal arguments per command.

Behavior contract: Command groups.

## Examples

Submit an ordered group whose second command fails. The group reports unknown per-step outcomes, keeps the first command's effect and never runs the third. Use Ruby 4.0.7, Bundler, Git and tmux 3.3a or newer on Unix, with /bin/cat and /bin/sh available. In an empty directory, fetch the documented library revision:

```console
$ git clone https://github.com/libtmux/libtmux-ruby.git libtmux-source && \
  git -C libtmux-source checkout d8ce4bbee0ca7748a81929f81f7d8d07f8c51267
```

Save this dependency file as Gemfile:

```ruby
source "https://rubygems.org"

gem "libtmux", path: "libtmux-source/gems/libtmux"
```

Save this complete program as run_group.rb. Its Server.start block owns a private tmux server and stops it on exit, including after an error.

[Source example](https://github.com/libtmux/libtmux-ruby/blob/d8ce4bbee0ca7748a81929f81f7d8d07f8c51267/examples/api/run_group.rb).

```ruby
# frozen_string_literal: true

begin
  # docs:begin main
  require "libtmux"

  LibTmux::Server.start do |server|
    server.new_session(name: "work", command: ["/bin/cat"])
    group = server.run_group([
      ["set-option", "-g", "@before", "kept"],
      ["select-pane", "-t", "%4294967294"],
      ["set-option", "-g", "@after", "never run"]
    ])
    puts "success: #{group.success?}"
    puts "steps: #{group.steps.map { |step| step.fetch(:outcome) }.join(', ')}"
    puts "@before: #{server.options(scope: :session).get('@before').as(:string)}"
  end
  # docs:end main
rescue StandardError => error
  warn "#{error.class}: #{error.message}"
  exit 1
end
```

Install the runtime dependencies and run the saved program. An operation or cleanup error makes it exit unsuccessfully:

```console
$ bundle config set --local path vendor/bundle && \
  bundle install --jobs 2 && \
  bundle exec ruby run_group.rb
```

Expected output:

```text
success: false
steps: unknown, unknown, unknown
@before: kept
```

## Parameters

- `arg1` (`::Array[::Array[::String]]`)
- `input` (`::String`)
- `timeout` (`::Numeric`)
- `cancel` (`untyped`)