SQL query to shrink all log files on sql instance

USE master

exec sp_MSforeachdb '

use [?]
 print ''?''
 print cast(databasepropertyex(''?'', ''Updateability'') as varchar(200))

 if databasepropertyex(''?'', ''Updateability'') = ''READ_WRITE ''

   dbcc shrinkfile(2,1)

'