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Re: Checking for perl [message #52907 is a reply to message #52906]

Wed, 07 March 2007 07:27

Ingo von Borstel
Messages: 54
Registered: September 2006

Member

Hi,
Ben Panter wrote:
> David Fanning wrote:
>
>> Maybe you could search the PATH environment variable for "perl":
>>
>> IDL> thePath = GetEnv('PATH')
>> IDL> IF StrPos(StrUpCase(thePath), 'PERL\BIN') NE -1 $
>> THEN Print, 'PERL is allowed'
>>
>> PERL is allowed
>>
>> Cheers,
>>
>> David
>
> Thanks David - unfortunately that fails under linux when perl is aliased
> rather than in the path. I think I probably just have to accept that I
> need to write a multi-os code.

You could check for the OS type using the system variable !version.os_type
Depending on the result you could implement a check whether it's in the
path (windows) or spawn a 'whereis perl' or evaluate the result of "ls
-R /usr | grep 'perl' " (unix / linux). In the latter case, of course,
it might happen, that a whereis command isn't available and the method
using 'grep' may take quite some while.

Maybe that are some ideas to work out?

Best regards,
Ingo

--
Ingo von Borstel <newsgroups@planetmaker.de>
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[Message index]

		Re: Checking for perl By: Ben Panter on Wed, 07 March 2007 07:34
		Re: Checking for perl By: Ingo von Borstel on Wed, 07 March 2007 07:27
		Re: Checking for perl By: wlandsman@jhu.edu on Wed, 07 March 2007 07:22
		Re: Checking for perl By: David Fanning on Wed, 07 March 2007 07:18
		Re: Checking for perl By: Ben Panter on Wed, 07 March 2007 07:03
		Re: Checking for perl By: David Fanning on Wed, 07 March 2007 06:46

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