Where are the log files located in Windows?
Assuming your program is called from a Command Prompt, stderr and stdout are by default directed to the console.
If you want to save them to a file, you must redirect the output.
STDOUT:
c:\path\program.exe >c:\temp\stdout.log
STDERR:
c:\path\program.exe 2>c:\temp\stderr.log
STDOUT and STDERR in different files
c:\path\program.exe >c:\temp\stdout.log 2>c:\temp\stderr.log
STDOUT and STDERR in the same file
c:\path\program.exe >c:\temp\stdout.log 2>&1
If you want to add to an existing log file instead of overwriting the content, use ">>" instead of ">". If the logfile does not exist, it will be create in both cases.
Edit: You edited your question with more details after my initial answer. So the new answer would be: no, they are not stored automatically. You must explicitly redirect the output streams to a file if you want to.
Georg Schölly
I'm currently studying Communication Systems at the EPFL in Switzerland.
Updated on September 17, 2022Comments
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Georg Schölly over 1 year
I've got a program written in Python that writes to
stderr
andstdout
. I invoke it usingpythonw
, that means it runs without a command line.Does Windows save those log files and if yes, where?
(I know I can redirect them in python or using the command line, but are they stored automatically?)
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alex over 14 yearsYour answer is better. +1
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user1686 over 14 yearsDOS died long ago. "Command Prompt" aka
cmd.exe
is a native Win32 program.