Set ClientLocation=C:\Program Files\Microsoft SQL Server\Client SDK\ODBC\110\Tools\Binn\SQLCMD.EXE
Set BackupLocation=C:\Program Files\Microsoft SQL Server\MSSQL12.SQLEXPRESS\MSSQL\Backup
Set BackupType=F
Set Command="%ClientLocation%" -S .\SQLEXPRESS -E -Q "EXEC sp_BackupDatabases @backupLocation='%BackupLocation%\', @backupType='%BackupType%'"
del /f /s /q "%BackupLocation%\*.bak"
%Command%
dir "%BackupLocation%"