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<form enctype="multipart/form-data" method="post" action="xxxxx">
<input type="file" accept="application/pdf" name="file">
<input type="submit" value="Upload">
</form>

<form enctype="multipart/form-data" method="post" action="yyyyy">
<input type="file" accept="image/jpg" name="file">
<input type="submit" value="Upload">
</form>

  my $cgi = new CGI;
  my $file = new $cgi->param('file');
...
  }
  close FUP;
  print $cgi->header();

$CGI::POST_MAX = 1024 * 1024;