class Bundler::CLI::Exec

def run
  validate_cmd!
  SharedHelpers.set_bundle_environment
  if bin_path = Bundler.which(cmd)
    if !Bundler.settings[:disable_exec_load] && ruby_shebang?(bin_path)
      return kernel_load(bin_path, *args)
    end
    kernel_exec(bin_path, *args)
  else
    # exec using the given command
    kernel_exec(cmd, *args)
  end
end