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I have a two version of my autorun.exe - for windows 7 - for oldier OS I look for a small free tool or program (not in .net or VB) that can be started silently with no window, checks for the OS version and starts an appropriated exe according to.

I wrote a batch, that works, but I can't start it silently from the autorun.inf.

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up vote 0 down vote accepted

AutoIT can perform this sort of operation and create a small executable which doesn't require .NET or any other runtime pre-installed.

Switch @OSVersion

    Case "WIN_7"
        Run( "versionA.exe" )

    Case "WIN_VISTA", "WIN_XP"
        Run( "versionB.exe" )

    Case Else
        Run( "versionC.exe" )

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