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Re: Finding an executable's Windows subsystem


Andy Koppe wrote:
> Apologies for having failed to google an answer, but is there an easy
> way in Cygwin to find out which Windows subsystem an executable
> targets?
> 
> More specfically, is rxvt a 'console' or a 'windows' program?

  In general, when you want to know about an executable or library file format
or details or contents, think "binutils!" to yourself :)


$   objdump -p /bin/rxvt.exe

/bin/rxvt.exe:     file format pei-i386

Characteristics 0x30f
        relocations stripped
        executable
        line numbers stripped
        symbols stripped
        32 bit words
        debugging information removed

Time/Date               Sun Nov 16 05:27:17 2008
Magic                   010b    (PE32)
MajorLinkerVersion      2
MinorLinkerVersion      56
SizeOfCode              00020600
SizeOfInitializedData   0000d800
SizeOfUninitializedData 00000c00
AddressOfEntryPoint     00001000
BaseOfCode              00001000
BaseOfData              00022000
ImageBase               00400000
SectionAlignment        00001000
FileAlignment           00000200
MajorOSystemVersion     4
MinorOSystemVersion     0
MajorImageVersion       1
MinorImageVersion       0
MajorSubsystemVersion   4
MinorSubsystemVersion   0
Win32Version            00000000
SizeOfImage             00032000
SizeOfHeaders           00000400
CheckSum                0003226c
Subsystem               00000003        (Windows CUI)
DllCharacteristics      00000000
SizeOfStackReserve      00200000
SizeOfStackCommit       00001000
SizeOfHeapReserve       00100000
SizeOfHeapCommit        00001000
LoaderFlags             00000000
NumberOfRvaAndSizes     00000010

[ ... much more snipped ... ]
    cheers,
      DaveK

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