Re: Process one line of output only?...

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"Al Dunbar [MS-MVP]" <alan-no-drub-spam@xxxxxxxxxxx> wrote in message
news:OBpO3rPNHHA.2028@xxxxxxxxxxxxxxxxxxxxxxx

"NayJo" <CrawNOSPAMforMEford@xxxxxxxxxxxxxx> wrote in message
news:u32E3qNNHHA.4912@xxxxxxxxxxxxxxxxxxxxxxx
When trying to use the for command to compare 2 files inline I only need
to
know that the files match or that they don't. Since 'fc' does not set
errorlevel I compare the output of fc to see if I get the message they
matched. If the files don't match I get many lines of data that I don't
necessarily need.

I tried putting a goto in the unmatch condition but this is making the
cmd.exe complain about mis-matched parentheses. Below is the code I am
trying to use. How can I modify this to succeed on match and fail on
mismatch without comparing every difference in the file?

for /F "skip=1 delims=* usebackq" %%L in (`fc /b reference_queries.txt
example_queries.txt`) do (
if "%%L"=="FC: no differences encountered" (
echo Settings are properly configured.
) ELSE (
REM jumpout as it is enough for me to know the files don't match
without
processing every difference.
echo Line is %%L
goto jumpout )
)
:jumpout

This yields ") not expected" error but if I remove the goto, the batch
runs
just fine.

Why not just search the output of fc like this:

fc /b reference_queries.txt example_queries.txt | find /i "no
differences"
if errorlevel 1 (
echo/files differ
) else (
echo/files are the same
)

/Al



Thank you very much. That works for me with the addition of:

fc /b reference_queries.txt example_queries.txt | find /i "no differences"
nul

to suppress the output of "no differences" to the command line if the
comparison succeeds. This is the fix I will go with.

Thank you also Jens for the goto EOF solution. I haven't tried it since I
need to perform several of these comparisons in my batch file but in
conjunction with 'call sub' it may be a good option.

John C


.

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