Script to backup all SQL Server databases

DECLARE @name VARCHAR(50) -- database name 

DECLARE @path VARCHAR(256) -- path for backup files 

DECLARE @fileName VARCHAR(256) -- filename for backup 

DECLARE @fileDate VARCHAR(20) -- used for file name

-- specify database backup directory

SET @path = 'C:\Backup\'

-- specify filename format

SELECT @fileDate = CONVERT(VARCHAR(20),GETDATE(),112)
DECLARE db_cursor CURSOR READ_ONLY FOR 
SELECT name
FROM master.dbo.sysdatabases
WHERE name NOT IN ('master','model','msdb','tempdb')  -- exclude these databases
OPEN db_cursor  
FETCH NEXT FROM db_cursor INTO @name  
WHILE @@FETCH_STATUS = 0  
BEGIN  
   SET @fileName = @path + @name + '_' + @fileDate + '.BAK' 
   BACKUP DATABASE @name TO DISK = @fileName 
   FETCH NEXT FROM db_cursor INTO @name  

END  

CLOSE db_cursor  
DEALLOCATE db_cursor

-- specify filename format

SELECT @fileDate = CONVERT(VARCHAR(20),GETDATE(),112)

-- specify filename format

SELECT @fileDate = CONVERT(VARCHAR(20),GETDATE(),112) + REPLACE(CONVERT(VARCHAR(20),GETDATE(),108),':','')