How to clean Up database log files under SQL Server 2008 R2

Use [master]

Go
alter DB [database name] set RECOVERY simple and no_wait
go
ALTER DATABASE [database name] set RECOVERY simple
go< C5/>use [database name]
go
DBCC shrinkfile (N ' [Database log file name] ', 0,truncateonly] go "
[master]
Go ALTER DATABASE [database name] set RECOVERY full and no_wait
go
ALTER Database [database name] Set RECOVERY full
go

--check Consult the log file name of the specified database use
[database name] Go
SELECT name from sys.database_files WHERE type_desc= ' log '