Checking

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I don't know if this has been asked before or not.

I'd like to be able to check if a URL exists, without downloading it.  
I'm making a script that automatically checks if rather large files are 
where they should be.

As things are now, I have to download them to see if they are there, and 
with the sizes, things get ugly.

$rawdata = get 'http://wherever/bigfile.gz';
if (defined $rawdata) print "Yay!";

(Well, perhaps a bit prettier than that, but you get the idea.)

Is there a way to just check, withouth the long delay and the bandwidth 
crunching?

-Benjamin

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