Question

I’m currently doing a findstr from a set of log files called link.2011*.log using a batch file with a SET command but am having trouble trying to echo the log file.

Code:

...
set /P log=.\DIR\%DEV%\link.2011*.log
findstr /L /C:"matrix" %log%
if errorlevel 1 (
echo %DEV% --- matrix not found >> .\output.txt
) else (
echo %DEV% --- matrix found %log% >> .\output.txt
:END

The output.txt does print the %dev% variable but the %log% variable outputs the whole string .\DIR\%DEV%\link.2011*.log

I would like the code to output the actual link.2011xxxxxxxx.log rather than the string.

Any help is appreciated.

Thanks.

Answer 1

If you use the /M switch with the FINDSTR command, the output will only display the name(s) of the file(s) where the match has taken place:

FINDSTR /M /L /C:"matrix" "%log%" >> .\output.txt

If you want the output to be exactly like in your example script, you could try the following approach:

FINDSTR /M /L /C:"matrix" "%log%" > .\tmpoutput.txt && (
  ECHO %DEV% --- matrix found: >> .\output.txt
) || (
  ECHO %DEV% --- matrix not found >> .\output.txt
)
TYPE .\tmpoutput.txt >> .\output.txt
DEL .\tmpoutput.txt

That is, the FINDSTR command searches for the string and outputs the list of files into a temporary file. If the search was successful, the matrix found message gets printed to .\output.txt, otherwise the matrix not found one does.

Afterwards, the contents of .\tmpoutput.txt is appended to output.txt. (You can have no worries about this step being done in case there was no match, because in that case the temporary file will be empty, so it will not affect the contents of output.txt.)