desc "Task description";
 
task "taskname", sub { ... };
task "taskname", "server1", ..., "server20", sub { ... };
 
group "group" => "server1", "server2", ...;
 
user("user");
 
password("password");
 
environment live => sub {
  user("root");
  password("foobar");
  pass_auth();
  group frontend => "www01", "www02";
};