Windows batch file: Pipe destroys my return code
batch-file, cmd
Solution
Nasty. I can only suggest a wrapper batch file that squirrels away the exit code of a passed command. An environment variable won't quite cut the mustard here. I suggest writing it to an unused fd, say 4.
wr.cmd:
call %*
echo %errorlevel% >&4
echo Some error message >&2
This is slightly tricky as fd 4 must be open when wr.cmd is called. For testing sake, here I echo `Some error message` to stderr to show that such text remains separate from the error level.
test1.bat:
call wr test2.bat 4>fail.txt 2>&1 | tee log.txt
set /p fail= <fail.txt
echo FAIL: %fail%
Problem
is it possible to return the errorlevel also if I pipe the output of a script into a logfile: test1.bat: ``` call test2.bat 2>&1 | tee log.txt echo ERRORLEVEL: %ERRORLEVEL% ``` test2.bat: ``` exit /B 1 ``` Output when calling test1.bat: ``` ERRORLEVEL: 0 ``` The errorlevel is always 0. The problem is, I want to call another script inside my script where the output should be redirected synchronously with the output shown in the command line, therefore a simple > is not enough for me. I tried several ideas, but result is that the pipe always seems to destroy the given error-level... :( Can you give me any further suggestions? Thanks in advance... :) Thanks for your answer... Unfortunately this does not work as well... :( See what I tried: test1.bat: ``` echo off set VAR1=" " echo VAR1 before test2: %VAR1% call test2.bat 2>&1 | tee log.txt echo VAR1 after test2: %VAR1% ``` test2: ``` @echo off set VAR1=ERROR echo VAR1 in test2: %VAR1% exit /B 1 ``` Output when calling test1.bat: ``` VAR1 before test2: " " VAR1 in test2: ERROR VAR1 after test2: " " ``` As an other solution I tried to save "ERRORVALUE: 1" into the logfile in case there is an error. In the mainscript I wanted to parse the log looking for this string. Unfortunately saving the find-result to an environment variable does not work as well, I did as follows: ``` FOR /F "tokens=1 delims=" %%A in ('type %logDir%\03_applySqls.log | find /c "ERRORVALUE: 1"') do SET val=%%A ``` Error I get: ``` "|" ist syntaktisch an dieser Stelle nicht verarbeitbar. ``` So how can I at least parse my logfile and in case the string is found in the log I can return the value as an errorlevel?