I assume you are using XML::LibXML (good for you!). To work with namespaces, you have to register them and use a prefix: 
my $xpc = 'XML::LibXML::XPathContext'->new;
$xpc->registerNs('e', 'http://www.earthstats.org/XFDL/Custom');

my @nodes = $xpc->findnodes('e:EARTHSTATS', $xml->documentElement);

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In reply to Re: Search and replace for large number of files by choroba
in thread Search and replace for large number of files by bangor

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