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#!/bin/sh
if [ -z "$1" ]; then
echo "Syntax: $0 <output-file>"
exit 1
fi
if [ ! -f /usr/bin/slugimage ]; then
echo "/usr/bin/slugimage not found. Please install the slugimage package."
exit 250
fi
if [ ! -f /usr/bin/devio ]; then
echo "/usr/bin/devio not found. Please install the devio package."
exit 251
fi
if [ ! -f di-nslu2.bin ]; then
echo "di-nslu2.bin not found! Please download and unpack from http://www.slug-firmware.net/d-dls.php."
exit 2
fi
INITRD=`ls -1r initrd.img-* | head -1`
VMLINUZ=`ls -1r vmlinuz-* | head -1`
if [ -z "$INITRD" ]; then
echo "No initrd.img found. Please copy from <NSLU2-drive>/boot first."
exit 3
fi
if [ -z "$VMLINUZ" ]; then
echo "No vmlinuz found. Please copy from <NSLU2-drive>/boot first."
exit 4
fi
INITRD_TEST=`echo "$INITRD" | sed -e "s/initrd\.img-//"`
VMLINUZ_TEST=`echo "$VMLINUZ" | sed -e "s/vmlinuz-//"`
if [ "$INITRD_TEST" != "$VMLINUZ_TEST" ]; then
echo "WARNING! initrd.img ($INITRD_TEST) and vmlinuz ($VMLINUZ_TEST) are for different kernel versions. Aborting..."
exit 5
fi
echo "Preconditions ok."
echo "Splitting di-nslu2.bin..."
slugimage -u -i di-nslu2.bin
# Will create RedBoot, SysConf, apex.bin, vmlinuz, ramdisk.gz, Trailer
echo "Preparing initrd.img..."
dd if="$INITRD" of="$INITRD.padded" ibs=6291440 conv=sync
devio "<<""$INITRD.padded" > "$INITRD.swapped" "xp $,4"
echo "Preparing vmlinuz..."
dd if="$VMLINUZ" of="$VMLINUZ.padded" ibs=1441760 conv=sync
devio "<<""$VMLINUZ.padded" > "$VMLINUZ.swapped" "xp $,4"
echo "Creating new image $1..."
slugimage -p -b RedBoot -s SysConf -L apex.bin -k "$VMLINUZ.swapped" -r "$INITRD.swapped" -t Trailer -o "$1"
echo "Cleaning up..."
rm RedBoot SysConf apex.bin vmlinuz ramdisk.gz Trailer
rm "$INITRD.padded" "$INITRD.swapped"
rm "$VMLINUZ.padded" "$VMLINUZ.swapped"
echo "All done."

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---
title: Linksys NSLU2
layout: default
created: 2009-08-10 01:41:46 +0200
updated: 2009-12-06 14:01:10 +0100
toc: true
tags:
- know-how
- hacking
- hardware
- linksys
- nas
- storage
---
**NSLU2** means *Network Storage Link for USB 2.0 Disk Drives*. Also see [here](http://en.wikipedia.org/wiki/NSLU2).
![NSLU2]({{ site.url }}/assets/nslu2.jpg)
Custom firmwares
================
The NSLU2 supports different firmwares. The original one is rather outdated. The most used firmwares are:
* *Unslung* --- an add-on to the original firmware, keeping the web-interface and all standard features
* *SlugOS/BE* --- a firmware optimized for small devices; using `opkg` and `ipkg` you can install various applications/services
* *Debian/NSLU2* --- a stripped down Debian linux with all things you know from Debian, but packages are not optimized for small memory devices
SlugOS/BE
---------
### Bad network performance
My network consists of a WLAN repeater which bridges the network of my neighbor with mine. Access to the Internet is provided
by a gateway in my neighbor's network. The NSLU2 device has severe problems downloading files from the Internet. All downloads
stall after a few bytes. Some tests showed that my side of the network works fine but everything behind the WLAN bridge is
almost unreachable from the NSLU2. All other devices in my network can use the Internet fine.
My current solution is using [tcpwatch-httpproxy](apt://tcpwatch-httpproxy) on my Desktop-PC and a file `~/.wgetrc` on my NSLU2
with the contents:
timeout = 10
http_proxy = <my IP>:8080
Debian/NSLU2
------------
### Power button for shutdown instead of reboot
To make pushing the power button shut down the Slug instead of rebooting it, edit the file `/etc/inittab` and replace the
line
ca:12345:ctrlaltdel:/sbin/shutdown -t1 -a -r now
by
ca:12345:ctrlaltdel:/sbin/shutdown -t1 -a -h now
Afterwards do a
telinit q
### Free memory
Since ARM packages from Debian are not optimized for small memory footprint, you might want to free up some memory by
deactivating several services which are not needed.
#### bash
To save even more memory, you could replace `bash` by `dash` in your `/etc/passwd` file.
#### exim4
Exim4 is a complete mail exchanger. Most people will only need a simple MTA to send some logs to the admin. So
remove `exim4` and use `ssmtp` instead.
#### getty
If you don't have/use the serial console on the NSLU2, you should disable `getty`. Edit the file `/etc/inittab` and
comment out the following line:
#T0:23:respawn:/sbin/getty -L ttyS0 115200 linux
Afterwards do a
telinit q
#### ipv6
If you don't use IPv6, you should blacklist the kernel module to save some more RAM. Add the following line
to `/etc/modprobe.d/blacklist`:
blacklist ipv6
#### sshd
If you don't use *sshfs* or some other special features of *OpenSSH*, you could replace it by `dropbear`.
### Emergency firmware
If your DebianSlug doesn't boot and the root disk is perfectly clean, you might have a firmware problem. To create
a working firmware, you'll need the files `vmlinuz-2.6.30-2-ixp4xx`, `initrd.img-2.6.30-2-ixp4xx`[^1] and the [di-nslu2.bin](http://www.slug-firmware.net/d-dls.php) (the DebianSlug installer image).
1. make sure you have installed the packages [slugimage](apt://slugimage) and [devio](apt://devio)
1. copy the `di-nslu2.bin` to an empty directory and run this:
slugimage -u -i di-nslu2.bin
1. now copy the two other files also in that directory
1. prepare the kernel image: (This will pad the file to 1441760 Bytes and then switch the [Endianess](http://en.wikipedia.org/wiki/Endianess) of the file.)
dd if=vmlinuz-2.6.30-2-ixp4xx of=vmlinuz-2.6.30-2-ixp4xx.padded ibs=1441760 conv=sync
devio "<<"vmlinuz-2.6.30-2-ixp4xx.padded > vmlinuz-2.6.30-2-ixp4xx.swapped "xp $,4"
1. prepare the initrd image:
dd if=initrd.img-2.6.30-2-ixp4xx of=initrd.img-2.6.30-2-ixp4xx.padded ibs=6291440 conv=sync
devio "<<"initrd.img-2.6.30-2-ixp4xx.padded > initrd.img-2.6.30-2-ixp4xx.swapped "xp $,4"
1. now compile the new firmware image:
slugimage -p -b RedBoot -s SysConf -L apex.bin -k vmlinuz-2.6.30-2-ixp4xx.swapped -r initrd.img-2.6.30-2-ixp4xx.swapped -t Trailer -o debianslug.bin
Finally you only have to burn the new image to the NSLU2 using [upslug2](apt://upslug2):
upslug2 -i debianslug.bin
If you want to make changes to the `initrd`, take a look at [cyrius.com](http://www.cyrius.com/debian/nslu2/repack.html).
**UPDATE:** Here is a little script which does the above in a more comfortable way. Just throw it into the directory
together with the `di-nslu2.bin`, the `initrd.img-2.xxx` and `vmlinuz-2.xxx`. Download: [emergencyfw.sh]({{ site.url }}/assets/emergencyfw.sh)
### Tools
#### iStat Server
[iStat](http://bjango.com/apps/istat/) is an app for the *iPhone* to show performance statistics of different machines.
I compiled their [iStat Server](http://code.google.com/p/istatd/) on my Slug and made a little DEB package.
![iStat]({{ site.url }}/assets/istat.png)
Download: [istatd_0.5.4_armel.deb]({{ site.url }}/assets/istatd_0.5.4_armel.deb)
[^1]: both found in `/boot` on the root partition of the NSLU2-disk

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---
title: Messenger apps for iOS
layout: default
created: 2009-05-01 16:07:59 +0200
updated: 2009-05-01 16:07:59 +0200
toc: false
tags:
- know-how
- hardware
- apple
- iphone
- messenger
- apps
---
There are quite a few messenger applications out there. Most people prefer *BeeJive* or *IM+* - not only because they
promise you to keep you online 24 hours a day - even without having the application open on your iPhone.
Privacy issues
==============
Since until today, no application can stay "online" in the background (i.e., if you push the home button on the phone,
the current active application will be closed) this means, that BeeJive or ShapeServices (IM+) keep you logged
in **through one of their servers**. This also means that every conversation runs through their servers.
Here is a little overview:
| Application | AIM | ICQ | MSN | Yahoo | GTalk | Jabber | Skype | Comment |
|:--------------|:---:|:---:|:---:|:-----:|:-----:|:------:|:-----:|:-----------|
| BeeJive | X | X | X | X | X | X | - | uses their own servers |
| IM+ | X | X | X | X | X | X | - | uses their own servers |
| IM+ for Skype | - | - | - | - | - | - | X | direct connection? |
| Fring | X | X | X | X | X | - | X | uses their own servers |
| MobileLinked | X | - | X | X | X | X | - | direct connection |

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---
title: iStat
layout: default
created: 2009-08-25 22:00:23 +0200
updated: 2009-09-26 21:47:34 +0200
toc: false
tags:
- know-how
- hardware
- apple
- iphone
- monitoring
- istat
---
[iStat](http://bjango.com/apps/istat/) is an app that shows performance statistics of different machines.
![iStat]({{ site.url }}/assets/istat.png)
I compiled their iStat Server on my **`x86_64`** machine and made a little DEB package.
Download: [istatd_0.5.4_x86_64.deb]({{ site.url }}/assets/istatd_0.5.4_x86_64.deb)
I also uploaded it to my PPA at [launchpad.net](https://launchpad.net/~mbirth/+archive/ppa).
(If you own a *Linksys NSLU2*, you might want [iStat Server (ARM)]({% post_url 2009-12-06-linksys-nslu2 %}#istat-server).

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---
title: Navigation for iOS
layout: default
created: 2009-04-27 22:16:34 +0200
updated: 2009-12-13 02:18:33 +0100
toc: true
tags:
- know-how
- hardware
- apple
- iphone
- navigation
- apps
---
xGPS
====
* **Homepage:** <http://xgps.xwaves.net/>
(You need a [jailbroken]({% post_url 2009-06-20-jailbreak %}) iPhone for this.)
xGPS is a navigation system which uses Google Maps for routing and display of the map. It can download map tiles
for offline use and can use the "normal" map as well as the terrain map of Google Maps. Your current position is
shown centered together with your route and you'll get turn-by-turn directions from a synthetic voice. It can
recalculate the route if you get off it.
Xroad G-Map
===========
* **Homepage:** [xroadgps.com](http://www.xroadgps.com/LinkClick.aspx?link=2463&tabid=2463)
The first official turn-by-turn navigation in the AppStore. Currently only supports the USA. People living in
Illinois might have to buy both parts (Western/Eastern USA; $20 each) as Illinois is split into two parts which
were distributed on both maps.
skobbler
========
Founded by previous Navigon employees, this app is not only really reasonably priced but also has always
up-to-date maps. The only drawback is that you need a data connection (UMTS, WLAN) for it to work. So you should
have a flat-rate plan for the areas you drive.
TomTom / Navigon
================
Both seem to be great but also expensive. IMHO if you prefer these two, buy a real device as it then allows you
to make phone calls AND get to where you want.
WeTravel (J2ME)
===============
* **Homepage:** <http://we-travel.co.cc/>
If the iPhone would support Java Midlets, this one might be interesting. Completely free and based on
OpenStreetMap. Maybe it would work with [alcheMo](http://www.innaworks.com/alcheMo-for-iPhone.html), a J2ME
to C++ converter. But if you have a "normal" phone with Java support and a memory card, this one is for you.

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---
title: My Applications for iOS
layout: default
created: 2009-05-28 11:04:01 +0200
updated: 2009-12-26 21:55:18 +0100
toc: true
tags:
- know-how
- hardware
- apple
- iphone
- apps
---
This should be a list of apps I use for specific tasks and why I use them:
Banking
=======
* [iOutbank](http://www.outbank.de/)
The free version allows access to all accounts you can reach with one ID. For me, this includes both of my accounts. What do you want more?
Birthdays
=========
* [Occasions](http://handcarvedcode.com/occasions/)
Read all descriptions for apps of this kind and decided that this one is the most powerful. Notifies you of upcoming birthdays,
anniversaries or any other events from your Contacts and you can also add your own events. You can also load holidays for your
country and get notified when you can stay in bed.
Messenger
=========
* [Beejive](http://www.beejive.com/)
* [IM+](http://www.shapeservices.com/en/products/details.php?product=im)
I'm currently evaluating both. *Beejive* looks nicer, but *IM+* has Skype support. As I am no avid messenger, I can't tell
about stability for now.
* [OneTeam](http://www.process-one.net/en/solutions/oneteam_iphone/)
Looks like the best for Jabber/XMPP but is extremely instable if there are any connection errors. But it looks nice and
supports all kinds of XMPP-Transports.
Music
=====
* [PlugPlayer](http://plugplayer.com/) (UPnP) and [Shoutcast](http://blog.shoutcast.com/2009/01/09/announcing-the-shoutcast-radio-app-for-iphone-and-ipod-touch/) (Internet Radio)
* also compared: *iMediaSuite* (UPnP)
Since *Shoutcast* is THE online directory for radio streams, there was no comparison against other apps for this.
*iMediaSuite* was already a "no go" after reading the reviews. I tried it and it crashed trying to read the contents of
my UPnP server. *PlugPlayer* however worked fine and even shows album art.
Task Management
===============
* [Toodledo](http://www.toodledo.com/info/iphone.php)
* also compared: *Remember The Milk*, *Appigo ToDo*
I wanted a tasks app which syncs with some online database. I was happily using RTM for some time together with
*Gnome Do* and directly per web. When looking around for some iPhone app I realized, that both iPhone apps need
a $25/yr Pro account for the synchronization to work. As I don't use this so extensively to justify this yearly
costs, I looked for alternatives.
Toodledo almost works the same, even a touch better I think. And for the iPhone app you just pay once - without
needing a subscription at their site.
Twitter
=======
* [Twittelator Pro](http://www.stone.com/Twittelator/)
* also compared: *Tweetie*, *Twitterrific Premium*, some free apps
*Twitterrific* has a nice feature-set but is too far away from the iPhone Look&Feel. *Tweetie* was hyped everywhere
as THE Twitter client for the iPhone, but compared to the recent version of *Twittelator*, it has to catch up now.
The latter one got my money because of the vast features which are all easily accessible. The automatic preview of
tweeted pictures is just icing on the cake.
Voice Dial
==========
* [Fonix iSpeak](http://www.fonixspeech.com/)
* also compared: most other voice dial apps
The goal was to get a voice dial feature which doesn't send my voice or contact's names to some server for processing.
From the reviews I learned that this is a slow process and it takes several seconds until the voice is analyzed and
the results are downloaded back to the iPhone. Another goal was to have some automatic recognition which doesn't need
to be trained. Using these criteria there was only one app left: *Fonix iSpeak*. Now if they'd only add more features
like [Voice Command for Windows Mobile](http://www.microsoft.com/windowsmobile/en-us/downloads/microsoft/about-voice-command.mspx) has.
Other Apps I use
================
* [Prowl](http://prowl.weks.net/)
* [mSecure](http://www.msevensoftware.com/msecure.html)
* [iStudiez Pro](http://istudentpro.com/)
* [mOTP](http://motp.sourceforge.net/#7)
* [m48](http://www.mksg.de/)
* [AppMiner](http://www.bitrino.com/appminer/)
* [Road Trip](http://darrensoft.ca/roadtrip/)
* [Kennzeichen-Finder](http://peachgames.de/content.php?c=9&c2=3)
* [Net Calc Pro](http://www.awissinger.de/Home/Net_Calc_Pro_-_Englisch.html)
* [PocketCAS](http://pocketcas.com/iphone/)
* [Signs / Schilder](http://mobile.clauss-net.de/Signs/)
* [iEno](http://www.ihanwel.com/?page_id=443)
* [Pocket Data](http://appshopper.com/productivity/pocket-data)
* [DB Navigator](http://www.hacon.de/hafas_e/iphone.shtml)
* [Lieferservice.de](http://www.lieferservice.de/iphone/)
* [Skype](http://www.skype.com/go/iphone)
* [Facebook](http://www.facebook.com/iphone)
* [heise.de](http://www.heise.de/software/download/heise.de/67214)
* [Byline](http://www.phantomfish.com/byline.html)
* [Wikipanion](http://www.wikipanion.net/)
* [WifiTrak](http://www.freshapps.com/wifitrak/)
* [Spots](http://www.savoysoftware.com/spots/)
* [TouchTerm Pro](http://jbrink.net/ttpro/)
* [ezShare](http://www.antecea.com/home)
* [iStat](http://bjango.com/apps/istat/)
* [Dropbox](https://www.dropbox.com/iphoneapp)
* [skobbler](http://beta.skobbler.de/skobbler_mobil_navigation.html)
* [OffMaps](http://www.offmaps.com/)
* [Geocaching](http://www.geocaching.com/iPhone/default.aspx)
* [Qype Radar](http://www.qype.com/qype-radar)
* [meinestadt](http://www.allesklar.com/iphone/iphone.html)
* [FahrInfo](http://metaquark.de/blog/2008/11/06/fahr-info-berlin/)
* [ZugInfo](http://www.ifoi-ware.net/?cat=43)
* [MetrO](http://metro.nanika.net/MetroZ-en.html)
* [Google Earth](http://www.google.com/mobile/products/earth.html#p=default)
* [RegenRadar](http://www.ifoi-ware.net/?cat=78)
* [AeroWeather](http://www.aeroweather.ch/)
* [Wikihood](http://www.dawikihood.com/English.html)
* [TVSpielfilm](http://apps.cellular.de/info/tvspielfilm)
* [Shazam](http://www.shazam.com/iphone)
* [MPoD](http://www.katoemba.net/makesnosenseatall/mpod/)
* [TED](http://www.appleinsider.com/blogs/iphone/08/12/09/ted_talk_videos_available_through_free_iphone_app.html)
* [iRetouch Lite](http://www.imappl.com/node/24)
* [Stanza](http://www.lexcycle.com/)
* [AirVideo](http://www.inmethod.com/)
* [PS Mobile](http://mobile.photoshop.com/iphone/)
* [Pricepirates](http://www.preispiraten.de/html02/index.php?content=programm&subcontent=preispiraten&os=iphone&inhalt=download#topb)
* [Amazon.com](http://www.amazon.com/gp/feature.html?ie=UTF8&docId=1000291661)
* [eBay](http://pages.ebay.com/mobile/iphone.html)
* [Contacts by Number](http://www.plaincode.com/products/contactsbynumber/)
* [Telefonbuch](http://www.tvg-verlag.de/Video-Telefonbuch-iPhone.html)
* [klickTel](http://shop.klicktel.de/de-klicktel-shop/mobile/klicktel-for-iphone/)
* [Post mobil](http://www.deutschepost.de/dpag?xmlFile=link1020130_1020117)
* [ShapeUp](http://www.shapeupmobile.com/Default.aspx)
* [Shopper](http://www.myshopperapp.com/)
* [Shoppee](http://web.me.com/emlombardo/Eric_Lombardo_Development/Shoppee.html)
* [RedLaser](http://redlaser.com/)
* [UMMS Medical Info](http://www.umm.edu/iphone/)
* [iDaft](http://www.dothedaft.com/app/)
* [FlightControl](http://www.firemint.com/flightcontrol/)
* [Monkey Island](http://appshopper.com/games/the-secret-of-monkey-island-special-edition)
* [Tower of Hanoi](http://appshopper.com/games/tower-of-hanoi)
* [2D Sense](http://www.2dsense.com/default.aspx?id=details&sid=getitnow&tid=2)
* [iShowU](http://appshopper.com/lifestyle/ishowu)
* [Satellite Tracker](http://appshopper.com/utilities/satellite-tracker)
* [Planets](http://www.qcontinuum.org/planets/)
* [iJapanese](http://www.dbfit.ca/apps.html)
* [Kana LS Touch](http://web.me.com/quitscheentchen/KSTen/Kana_LS_Touch.html)
* [CubeCheater](http://cubecheater.efaller.com/)
* [My Japanese Coach](http://appshopper.com/education/my-japanese-coach)