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From:	Andrew DeFaria <Andrew AT DeFaria DOT com>
Subject:	Re: A good way to test if cygwin isn't installed?
Date:	Fri, 01 Oct 2004 08:44:00 -0700
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Christopher Faylor wrote:

> On Fri, Oct 01, 2004 at 02:51:01PM +1000, 
> luke DOT kendall AT cisra DOT canon DOT com DOT au wrote:
>
>> I just wanted to run an idea past the list.
>>
>> I want to write a shell script to test if Cygwin has been installed 
>> on the machine running the shell script.
>>
>> I do this by running a shell (from a network install of Cygwin if 
>> necessary).
>>
>> If Cygwin is installed on the local machine, then "cygpath -w /" 
>> returns something like "c:\cygwin". (Good for discovering what drive  
>> Cygwin was installed on, right?) If Cygwin has not been installed,  
>> "cygpath -w /" returns a plain old backslash.
>>
>> That's fine - maybe even great. My question: is that a reliable way 
>> to perform that test? It seems good to me.
>
> If you have cygwin programs available to you, then use the mount 
> command. If the only output from the mount command is of the 
> "noumount" variety then cygwin isn't installed in any meaningful way.

Personally I would consider the existence or non-existence of 
cygwin1.dll to be a more definitive measure of whether or not Cygwin is 
installed in a "meaningful" way.

-- 
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