How can I remove empty lines from wmic output?

Question

This is my string to obtain the position of TeamViewer (any version) service executable:

for /f "skip=1 delims=" %A in ('wmic path win32_service where "name like 'TeamViewer%'" get pathname') do set POSITION=%A

The problem is caused by wmic because it includes an empty line at the end of result (on Windows 7 command) and this is the output:

C:\Users\giovanni>for /f "skip=1 delims=" %A in ('wmic path win32_service where "name like 'TeamViewer%
'" get pathname') do set POSITION=%A

 :\Users\giovanni>set POSITION="C:\Program Files\TeamViewer\Version8\TeamViewer_Service.exe"

 :\Users\giovanni>set POSITION=

C:\Users\giovanni>echo %position%
ECHO enabled.

How I can get only the second line of the output with the correct position of the executable? (or skip the latest line, of course).

Thanks all in advance and have a nice day. Giovanni.

This is checktv.bat:

for /f "skip=1 delims=" %%A in ('wmic path win32_service where "name like 'TeamViewer%'" get pathname ^| findstr /r /v "^$"') do set POSITION=%%A
echo %POSITION%

Solution 1

Like this:

for /f "skip=1 delims=" %A in (
  'wmic path win32_service where "name like 'TeamViewer%'" get pathname ^| findstr /r /v "^$"'
) do set POSITION=%A

The findstr /r /v "^$" removes empty lines from the output.

Solution 2

wmic blah /value | find "=" >> wherever

output will be

field=value

no extra lines

tokenize from there, delim =

Comments

[Admin]

And -I add to the request- can I include the complete string in a batch file? I need to specify something before?

[Ansgar Wiechers]

If you want to use this in a batch file you have to change %A to %%A.

[Admin]

If i change %A in %AA the batch doesn't produce anything: for /f "skip=1 delims=" %%A in ('wmic path win32_service where "name like 'TeamViewer%'" get pathname ^| findstr /r /v "^$"') do set POSITION=%%A C:\>checkteamviewer.bat C:\>

[Ansgar Wiechers]

Add echo %POSITION% at the end of the batch file.

[Admin]

Sorry Ansgar, I have edited my question and I have included "checktv.bat" code.

[Ansgar Wiechers]

Ah, I see. You have to double the % in the WMI query as well: "name like 'TeamViewer%%'".

[Admin]

Yes, You got it! Thanks a lot :-)

[Davor Josipovic]

Nice point. The /VALUE switch doesn't seem to be documented when running wmic /?.