Newline Character In Query

Can I use a newline character in my query? I want to dynamically generate a statement, split on several lines. Simple example:

declare @cmd varchar(100)
select @cmd = 'select user_name(), getdate()'
select @cmd

The output will be: select user_name(), getdate()

Can I use something like this:
declare @cmd varchar(100)
select @cmd = 'select user_name(),
getdate()'
select @cmd

so as to get an output like this:
select user_name(),
getdate()

Thanks.