SQL Server server Script which will shrink all databases

DECLARE @cmd1 varchar(2000),

@cmd2 varchar(2000)

SET @cmd1 = 'BACKUP LOG [?] WITH NO_Log'

SET @cmd2 = 'DBCC SHRINKDATABASE ([?],TRUNCATEONLY)'

EXEC sp_msforeachdb @command1 = @cmd1,

@command2 = @cmd2