diff --git a/404handler.pl b/404handler.pl
new file mode 100755
index 00000000..ab0d8ea3
--- /dev/null
+++ b/404handler.pl
@@ -0,0 +1,20 @@
+#! /usr/bin/perl
+package OddMuse;
+my $dir = '/var/www/wiki';
+my $script = '/usr/lib/cgi-bin/wiki.pl';
+my @path = split(/\//, $ENV{REDIRECT_URL});
+my $file = $path[$#path];
+
+# remember to compare modification dates on the pageidx file!
+# remember to set $ScriptName in the config correctly.
+# call $script as "true CGI" so that we can look at http status codes!
+
+{
+  local $/;
+  open(F, "$script |") || print STDERR "can't run $script: $!\n";
+  my $data = <F>;
+  print $data;
+  open(G, "> $dir/$file") || print STDERR "can't write $dir/$file: $!\n";
+  print G $data;
+}
+