Detecting rubyw

[Nathaniel Talbott]

Is there any way (on Windows) to detect if a script is running under
rubyw.exe, i.e. headless?

Thanks,


Nathaniel
Terralien, Inc.

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[Lyndon Samson]

Do you get an exception if you try puts? If so you could catch that.

 

[Nathaniel Talbott]

Do you get an exception if you try puts? If so you could catch that.

Nope, no exception, and STDOUT.closed? returns false. Any other ideas?


Nathaniel
Terralien, Inc.

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[nobu.nokada]

Hi,

At Wed, 17 Nov 2004 12:02:12 +0900,
Nathaniel Talbott wrote in [ruby-talk:120600]:

Is there any way (on Windows) to detect if a script is running under
rubyw.exe, i.e. headless?

Can you open "CONIN$" and "CONOUT$" device files?

 

[Nathaniel Talbott]

At Wed, 17 Nov 2004 12:02:12 +0900,
Nathaniel Talbott wrote in [ruby-talk:120600]:

Is there any way (on Windows) to detect if a script is running under
rubyw.exe, i.e. headless?

Can you open "CONIN$" and "CONOUT$" device files?

I don't know... how would I do that? I don't think I've ever opened a
device file on Windows.


Nathaniel
Terralien, Inc.

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[nobu.nokada]

Hi,

At Wed, 17 Nov 2004 23:57:52 +0900,
Nathaniel Talbott wrote in [ruby-talk:120639]:

I don't know... how would I do that? I don't think I've ever opened a
device file on Windows.

Just open as well as ordinary files.

begin
open("CONIN$") {}
open("CONOUT$", "w") {}
have_console = true
rescue SystemCallError
have_console = false
end

 

[Nathaniel Talbott]

Nathaniel Talbott wrote in [ruby-talk:120639]:

I don't know... how would I do that? I don't think I've ever opened a
device file on Windows.

Just open as well as ordinary files.

begin
open("CONIN$") {}
open("CONOUT$", "w") {}
have_console = true
rescue SystemCallError
have_console = false
end

Excellent! Works great. Thanks a ton, Nobu.


Nathaniel
Terralien, Inc.

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