Category Archives: Uncategorized

Converting Nokia Backup Files (nbf) to CSV without a Nokia phone

Recently I found myself in need to access an old backup of my phonebook. The backup was created using the backup function of my Nokia phone. It used the “NBF” (Nokia Backup File) extension.

I struggled with Nokia PC Suite, Nokisoft, and some nfb python scripts before realizing that I was actually looking at a zip archive of my phone filesystem!

Wow, so it’s really this easy:

  • rename the backup from backup.nbf to
  • unpack it with: unzip (or using winzip)
  • search for .vcf files inside the archive. In my case they were located under predefhiddenfolder/backup/WIP/32/contacts
  • YMMV

Converting the .vcf files to something which vaguely resembles a .csv file is trivial.

I used an ugly oneliner to do it. Here it comes for your pleasure:



Usare opkg sulla Fonera

Utilizzando il firmware sulla Fonera 2.0N, il gestore dei pacchetti opkg non funziona di default. Occorre eseguire due operazioni:

  • Creare la directory /usr/lib/opkg: mkdir /usr/lib/opkg
  • Modificare il file /etc/opkg.conf come segue:
    src snapshots2
    dest root /
    dest ram /tmp
    lists_dir ext /var/opkg-lists
    option force_space

Fate attenzione però! L’opzione force_space fa sì che non vengano ignorati controlli sullo spazio libero effettivamente disponibile prima dell’installazione dei pacchetti. Dovrà essere vostra cura verificare di avere spazio disponibile a sufficienza in /jffs2 prima di procedere con l’installazione di nuovo software.


Find subtitles under MacOSX/Linux

There are a plethora of subtitle finders for Windows but only a few for MacOSX and Linux. Most of them often don’t work.

Searching for the right subtitle for a specific avi file can be frustrating. It’s not enough to match the filename. It’s always better to rely on the hash of the movie to find a properly sync’ed subtitle.

Fortunately, started offering a nice and easy interface to search their subtitle database. Here is a simple script I found on site and modified for my needs. It will help you to find the subtitles for your favourite movies and tv series:

use strict;
use warnings;
my $file = $ARGV[0];
unless (defined($file) and -r $file) { print "Syntax: $0 /path/file.avi\n"; }
my $hash = OpenSubtitlesHash($file);
print "
Now visit:
sub OpenSubtitlesHash {
my $filename = shift or die("Need video filename");
open my $handle, "<", $filename or die $!; binmode $handle; my $fsize = -s $filename; my $hash = [$fsize & 0xFFFF, ($fsize >> 16) & 0xFFFF, 0, 0];
$hash = AddUINT64($hash, ReadUINT64($handle)) for (1..8192);
my $offset = $fsize - 65536;
seek($handle, $offset > 0 ? $offset : 0, 0) or die $!;
$hash = AddUINT64($hash, ReadUINT64($handle)) for (1..8192);
close $handle or die $!;
return UINT64FormatHex($hash);
sub ReadUINT64 {
read($_[0], my $u, 8);
return [unpack("vvvv", $u)];
sub AddUINT64 {
my $o = [0,0,0,0];
my $carry = 0;
for my $i (0..3) {
if (($_[0]->[$i] + $_[1]->[$i] + $carry) > 0xffff ) {
$o->[$i] += ($_[0]->[$i] + $_[1]->[$i] + $carry) & 0xffff;
$carry = 1;
} else {
$o->[$i] += ($_[0]->[$i] + $_[1]->[$i] + $carry);
$carry = 0;
return $o;
sub UINT64FormatHex {
return sprintf("%04x%04x%04x%04x", $_[0]->[3], $_[0]->[2], $_[0]->[1], $_[0]->[0]);