China DOS Union

Check the specified folder. If a line in a TXT file inside it is "HHHHHHH", immediately delete that file. If "HHHHHHH" appears in other lines, it can be ignored. The following code doesn't seem to solve my problem. Who is willing to help take a look? Thanks

set old=d:\test
set SRT1=HHHHHHH

for /f "delims=" %%c in ('dir /b /s /a-d "%old%\*.txt"') do (
for /f "delims=" %%d in (%%c) do (
if *%%d*==*%STR1%* del %%c))

Is there anyone to help take a look? Thanks.

Is my question is too simple or not explained clearly?

Suppose there are many TXT files in a directory:

File A:
123
456
123456


File B:
123
888
88456

If a specific string 456 is given, then file A should be deleted because the second line is exactly 456. And file B does not need to be deleted because 456 is only part of its third line.

Can anyone help? Or give a hint, I'm very new to this...

Check if you posted in the wrong place:
http://www.cn-dos.net/forum/viewthread.php?tid=46409

If you are using the DOS system, its for command does not support /f.

To be precise, it's that the FOR command in COMMAND that comes with DOS doesn't support the /f parameter. But if you use 4DOS as the command interpreter, it does support it.