SQL Server: Shrink Transaction Logs

-- Backup database:
USE master;
BACKUP DATABASE dbname  TO DISK = 'D:\Backup\dbnameFull.bak' WITH FORMAT;   
GO
 
-- Backup transaction log:
BACKUP LOG dbname TO DISK = 'D:\Backup\dbnameLog.TRN'
GO
 
-- Set recovery mode to SIMPLE:
USE master;
ALTER DATABASE dbname SET RECOVERY SIMPLE;
GO
 
-- Shrink transaction log file to 1mb:
USE dbname;
GO
DBCC SHRINKFILE(2, 1)
GO
 
-- Set recovery mode to FULL if needed:
USE master;
ALTER DATABASE dbname SET RECOVERY FULL;
GO