Use regular expression and parse the year and month from the file name.
$filename =~ /^(\d+)-(\d+)-(.*)/;
my $year = $1;
my $mon = $2;
print("$year-$mon");
(OR)
Use split() method
my $filename = "2010-7-this-is-an.html";
my ($year, $mon) = split('-', $filename);
print("$year-$mon");
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Snippets of code should be wrapped in
<code> tags not
<pre> tags. In fact, <pre>
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or How to display code and escape characters
are good places to start.
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