2

I run a Windows command line program (that I can not make accessible) with wine. It apparently writes something to stdout and I'm trying to capture that output, but I can't redirect it.

No matter if I redirect stdout or stderr to a file, the program output is still printed on the console and is not written to the file. When I redirect stderr, the wine output goes away, but the program's output is stilled printed on screen.

wine program.exe > out   # File is empty, program output printed on screen
wine program.exe 2> out  # Wine output gets redirected to file, program output still printed on screen

If I redirect both, the output is neither printed on screen nor written to the file.

Edit: On Windows, behavior is similar, but when redirecting both, everything is still printed on screen.

Here are some examples with the complete output.

$ wine program.exe
fixme:winediag:start_process Wine Staging 1.9.23 is a testing version containing experimental patches.
fixme:winediag:start_process Please mention your exact version when filing bug reports on winehq.org.

output by program.exe

fixme:msvcrt:__clean_type_info_names_internal (0x100aaa54) stub

When I try to redirect the output, this happens:

$ wine program.exe > out 2>&1
$ cat out
fixme:winediag:start_process Wine Staging 1.9.23 is a testing version containing experimental patches.
fixme:winediag:start_process Please mention your exact version when filing bug reports on winehq.org.
fixme:msvcrt:__clean_type_info_names_internal (0x100aaa54) stub

I.e., the program's console output is completely missing. The program still works fine and writes some files it's supposed to write. As a check, I did the same with pngcrush, and I get what I'd expect. Without redirection:

$ wine pngcrush_1_8_10_w32.exe test.png out.png
fixme:winediag:start_process Wine Staging 1.9.23 is a testing version containing experimental patches.
fixme:winediag:start_process Please mention your exact version when filing bug reports on winehq.org.

 | pngcrush-1.8.10
 |    Copyright (C) 1998-2002, 2006-2016 Glenn Randers-Pehrson
 |    Portions Copyright (C) 2005 Greg Roelofs
 | This is a free, open-source program.  Permission is irrevocably
 | granted to everyone to use this version of pngcrush without
 | payment of any fee.
 | Executable name is pngcrush_1_8_10_w32.exe
 | It was built with   bundled libpng-1.6.26
 | and is running with bundled libpng-1.6.26
 |    Copyright (C) 1998-2004, 2006-2016 Glenn Randers-Pehrson,
 |    Copyright (C) 1996, 1997 Andreas Dilger,
 |    Copyright (C) 1995, Guy Eric Schalnat, Group 42 Inc.,
 | and bundled zlib-1.2.8.1-motley, Copyright (C) 1995 (or later),
 |    Jean-loup Gailly and Mark Adler,
 | and using "clock()".
 | It was compiled with gcc version 4.8.0 20121015 (experimental).

  Recompressing IDAT chunks in test.png to out.png
   Total length of data found in critical chunks            =    431830
   Critical chunk length, method   1 (ws 15 fm 0 zl 4 zs 0) =    495979
   Critical chunk length, method   2 (ws 15 fm 1 zl 4 zs 0) >    495979
   Critical chunk length, method   3 (ws 15 fm 5 zl 4 zs 1) =    495354
   Critical chunk length, method   6 (ws 15 fm 5 zl 9 zs 0) =    457709
   Critical chunk length, method   9 (ws 15 fm 5 zl 2 zs 2) >    457709
   Critical chunk length, method  10 (ws 15 fm 5 zl 9 zs 1) =    451813
   Best pngcrush method        =  10 (ws 15 fm 5 zl 9 zs 1) =    451813
     (4.63% critical chunk increase)
     (4.63% filesize increase)

CPU time decode 4.407583, encode 17.094248, other 4294967296.000000, total 17.180143 sec

With redirection:

$ wine pngcrush_1_8_10_w32.exe test.png out.png > out 2>&1
$ cat out
fixme:winediag:start_process Wine Staging 1.9.23 is a testing version containing experimental patches.
fixme:winediag:start_process Please mention your exact version when filing bug reports on winehq.org.

 | pngcrush-1.8.10
 |    Copyright (C) 1998-2002, 2006-2016 Glenn Randers-Pehrson
 |    Portions Copyright (C) 2005 Greg Roelofs
 | This is a free, open-source program.  Permission is irrevocably
 | granted to everyone to use this version of pngcrush without
 | payment of any fee.
 | Executable name is pngcrush_1_8_10_w32.exe
 | It was built with   bundled libpng-1.6.26
 | and is running with bundled libpng-1.6.26
 |    Copyright (C) 1998-2004, 2006-2016 Glenn Randers-Pehrson,
 |    Copyright (C) 1996, 1997 Andreas Dilger,
 |    Copyright (C) 1995, Guy Eric Schalnat, Group 42 Inc.,
 | and bundled zlib-1.2.8.1-motley, Copyright (C) 1995 (or later),
 |    Jean-loup Gailly and Mark Adler,
 | and using "clock()".
 | It was compiled with gcc version 4.8.0 20121015 (experimental).

  Recompressing IDAT chunks in test.png to out.png
   Total length of data found in critical chunks            =    431830
   Critical chunk length, method   1 (ws 15 fm 0 zl 4 zs 0) =    495979
   Critical chunk length, method   2 (ws 15 fm 1 zl 4 zs 0) >    495979
   Critical chunk length, method   3 (ws 15 fm 5 zl 4 zs 1) =    495354
   Critical chunk length, method   6 (ws 15 fm 5 zl 9 zs 0) =    457709
   Critical chunk length, method   9 (ws 15 fm 5 zl 2 zs 2) >    457709
   Critical chunk length, method  10 (ws 15 fm 5 zl 9 zs 1) =    451813
   Best pngcrush method        =  10 (ws 15 fm 5 zl 9 zs 1) =    451813
     (4.63% critical chunk increase)
     (4.63% filesize increase)

CPU time decode 4.339310, encode 17.137527, other 4.294083, total 17.182100 sec

What could be the cause of that not working for the other program?

wine stdout stderr io-redirection

  • Does strace give any indication a) what the file descriptor for that output is or b) is that output even going though the unix layer? (Assuming strace or something like it can actually be run...) – thrig Dec 8 '16 at 15:26

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Browse other questions tagged or ask your own question.