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If I run, for example:

dir /s /b /o:gn "c:\Program Files\TrueCrypt" | findstr .sys

I comfortably get 

c:\Program Files\TrueCrypt\truecrypt.sys
c:\Program Files\TrueCrypt\truecrypt-x64.sys

..in return. But if I add a folder that doesn't exist (I won't go into the reasons why this would be the case, but it will be), I just get an error:

dir /s /b /o:gn "c:\Program Files\TrueCrypt" "c:\non folder\non subfolder" | findstr .sys
The system cannot find the file specified.

Unlike in the UNIX world where I can use "find" and it returns files found in any directories without only barfing on the directories that don't exist.

1 Answers1

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You can use a loop and call dir for each of the folders:

for %F in ("c:\Program Files\TrueCrypt" "c:\non folder\non subfolder") do (
  dir /s /b /o:gn "%F"
) | findstr .sys

However, depending on what you need exactly you can probably do better by ditching dir and findstr here and opt for a loop over the files. But that depends a bit on what your overall goal is.

Joey
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  • Perfect...well...almost! I think you meant to put a "%F" in there after the dir command. Ta –  Mar 11 '14 at 12:00
  • Well, yes. Sorry. I rarely bother to test my batch stuff anymore these days, so minor slips like those happen sometimes :) – Joey Mar 11 '14 at 12:12