Batch processing – Resizing and embedding watermarks into images using ImageMagick for Windows and Linux

March 19, 2017

As a response to a recent question I came across, I want to share a simple bash script for embedding a watermark image/logo and resizing multiple images at the same time for online publishing.

Debugging ROS nodes started from launch file with Eclipse

December 14, 2014


  • Imported ROS project into Eclipse workspace (see for details)
  • Installed gdbserver (apt-get install gdbserver)

Follow the steps below.

1) Adjust the launch file:

Add this to the node tag if you want a new terminal window for the process

Enable full (Internet) VPN tunneling in Linux Network-Manager

September 12, 2014

I have successfully configured a VPN connection to my home router, thus, I was able to access machines in my private LAN. Moreover, I wanted to tunnel my whole Internet traffic over this connection. Even a google search could not answer, how to solve this with the network-manager which is used in most Linux desktops. read more

Truecrypt performance test on Netgear ReadyNAS 102

January 1, 2014

Happy New Year everybody!

This follow up post to my last article about using Truecrypt on my ReadyNAS 102 (with  two Seagate Pipeline HD ST2000VM003 – 2 TB – 5900 rpm RAID 1) ( ) will examine the transfer performance while using Truecrypt. read more

Truecrypt on Netgear ReadyNAS 100 series (Debian) with auto mount on attached keyfile thumb drive dongle

December 30, 2013

Since I own a Netgear ReadyNAS 102 I was wondering how I could use encryption for special content in a convenient way. Because the Netgear firmware does not provide an encryption feature inside its ReadyNAS OS wrapper on top of the underlying Debian Linux I decided to have a closer look on Truecrypt, which I already have in use on my other desktop and mobile computers. read more

Adjust exif timestamp on command-line with exiftool

November 30, 2013

I just realized that I forgot to change the timezone/time settings in my camera since I am back from Asia (~6month). In order to fix the timestamp on all my photos I made during this time period I used exiftool for doing this on the command-line.

Android-x86 ICS 4.0.3 for Acer1000 series – Beta 1 (Acer 1825, 1820, 1425, 1420 and compatible Packard Bell (Butterfly Touch …))

March 8, 2012

Beta 2 is available –>

I am very proud to present you my new Android-x86 build for the Acer1000 series, which is the first version of the Android ICS (Ice Cream Sandwich) 4.0.3. release. This release is up to date with current development status of the repo and includes the gapps package. read more

Android-x86 Honeycomb 3.2 for Acer1825 series – Beta 3 (Acer 1825, 1820, 1425, 1420 and compatible Packard Bell)

January 18, 2012

ICS beta 1 is out please step forward to this release!