Variable enthält nur den letzten Wert

C:\check_mk>(
SET str=235 Unknown_Attribute       0x0012   099   099   ---    Old_age   Always       -       21  
 echo 241 Total_LBAs_Written      0x0032   099   099   ---    Old_age   Always       -       6044528992   | findstr /i "Always"  1>nul    
 If "9009" == "0" (echo "235 Unknown_Attribute       0x0012   099   099   ---    Old_age   Always       -       21" )   
) 

@echo on
echo ^<^<^<smart^>^>^>
for /f "delims=# tokens=1,2" %%i in ('smartctl.exe --scan') do (  
	for /f "delims=, tokens=2" %%x in ("%%j") do (  
		if "%%x" == " ATA device" (  
			for /f "tokens=*" %%p in ('smartctl.exe -A %%i') do (  
					SET str=%%p
					echo %str% | findstr /i "Always" > nul  
					If "%errorlevel%"=="0" (  
						echo "%%p"  
					)
				)
			)
		)
	)
)