On line 353 of nt_export_djb.pl the location of the tinydns-data script is hardcoded to /usr/local/bin. This should be a configurable option, perhaps a variable at the top of the file, a parameter with a default, or else some logic to find the binary itself. At the very least, it should test that the binary exists before calling it and exit gracefully (with a nice error) - not with the error that tinydns-data exited with some arbitrary and non-useful error code.
my $djb_error = system("/usr/local/bin/tinydns-data");
- my $djb_error = system("/usr/local/bin/tinydns-data");
+ my $tinydata = '/usr/local/bin/tinydns-data';
+ $tinydata = '/usr/bin/tinydns-data' if ! -x $tinydata;
+ die "unable to find tinydns-data" if ! -x $tinydata;
+ my $djb_error = system($tinydata);