How to backup database with datetimestamp in file name?

Execute the following Microsoft SQL Server T-SQL script to demonstrate the backup of AdventureWorks2008 database with the datetimestamp in the backup file name. 

USE master;

DECLARE @FileName NVARCHAR(1024)

SET @FileName ='F:\data\AdventureWorks2008\backup\AW2008'+REPLACE(REPLACE(CONVERT(varchar(100), GETDATE(),100),':','_'),' ','_')+'.BAK'

SET @FileName = REPLACE(@FileName,'__','_')

PRINT @FileName

BACKUP DATABASE AdventureWorks2008 TO  DISK = @FileName WITH NOFORMAT, INIT,  NAME =N'AdventureWorks2008-Full Database Backup'

GO