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Re: How to check if a file exists?

• To: mathgroup at smc.vnet.net
• Subject: [mg47590] Re: How to check if a file exists?
• From: drbob at bigfoot.com (Bobby R. Treat)
• Date: Fri, 16 Apr 2004 05:22:09 -0400 (EDT)
• References: <c5lf22$bn0$1@smc.vnet.net>
• Sender: owner-wri-mathgroup at wolfram.com

FileNames["C:\Documents and Settings\All Users\Application
Data\Mathematica\Applications\
\DrBob\Documentation\English\Lagrange.nb"]

(for instance) will be an empty list if the file doesn't exist.

Bobby

Thomas Guignard <thomas.guignard at epfl.ch> wrote in message news:<c5lf22$bn0$1 at smc.vnet.net>...
> Hi
> 
> I have little experience in Mathematica and I have trouble getting used 
> to the Mathematica way of thinking.
> 
> I'm looking for a way to check if a given file exists. If it exists, I 
> load its contents, if not I have to start a block of calculations.
> 
> I just can't find the function to check the existence of a file!
> 
> Thanks
> Tom