Groesbeek, view of the 'National Liberation Museum 1944-1945' in Groesbeek. © Ton Kersten
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About

How to contact me

You can reach me at: and my GPG key fingerprint is:

83C9 2481 D471 4FA4 B460 C449 B0BA ACA1 1B75 966C

Where the last 8 characters are the key-id.

I also like to receive books, whisky (Single malt, Scottish Islay), gadgets and CD’s smiley and I talk about and “do” technology, don’t like politics and love food (especially Indonesian) and cooking for friends and quiet dinner parties.

I’m also on Twitter as @TonKersten, on Jabber TonK@jabber.TonKersten.com sometimes Skype and Google +


Just about me

  • UNIX/Linux consultant and Trainer @ ATComputing
  • Linux Geek (started in 1992 with 0.96α)
  • Shell script nerd
  • Open Source enthusiast
  • Programming (Python)
  • Loves DNS
  • Configuration management with Puppet or Ansible
  • Plain text aficionado
  • Big fan of things that just work

Education

I studied computer science at the Venlo Polytechnic (called IHBO Venlo, aka HTS Venlo), where I received the Bachelors degree in January 1989.

In 1986 this is where I was introduced to the lovely UNIX operating system. Thanks Mr. Wim Euwe.


UNIX / Linux Certification

LPI 101
2013-03-21
LPI 102
2013-08-15
Novell Certified Linux Administrator
2013-08-15

Prince2 Certification

On May 13 2009 I took the “Prince2 Foundation” exam and succeeded.

So, now I do have a “Prince2 Foundation qualification”.

Maybe, when time comes, I will do the “Prince2 Practitioner” as well.

Prince 2 foundation
2009-05-13

LinkedIn

You can see my personal and public profile on LinkedIn


UNIX/Linux

I live in Groesbeek, in the Netherlands, near the German border and I run all kinds of Linux and UNIX. For instance my laptop runs Ubuntu and my servers run a variety of stuff, like CentOS and FreeBSD.

When I first met UNIX in 1986 I was immediately very impressed with the flexibility and the ease of use. I got hooked, bad, very bad.

And then Linux came long, which I started using way back in 1992, when the kernel version was at 0.96α. This was a 40 floppy SLS (Soft Landing Systems) distribution, the predecessor of Slackware, running on my Intel 486 PC with only 8MB of RAM. And it worked like a charm. I was completely sold. Later on I switched to Yggdrasil and after that I switched back to Slackware again. This all until my boss decided we needed to use Redhat Linux. In fact I really don’t care what distro to use, as long as it’s not to exotic.

After a lot of work of the Open Source community configuration and installation of a Linux machine is much simplified and I believe it’s almost there to take over Windows.

Even after all these years I’m still charmed with the simplicity and ways to tweak a UNIX / Linux system. It does what I want it to do and not the other way around.


AT Computing

Moving my work a step forward and focus solely on UNIX and Linux I joined forces at AT Computing in 2001 as a senior UNIX/Linux consultant and UNIX/Linux teacher.

At this moment in time I teach these courses:

UNIX/Linux part 1 a.k.a. The UNIX/Linux starters course
Introduction to the Linux/UNIX “philosophy” of working. It teaches the basic concepts and the elementary functionality of UNIX/Linux systems.
UNIX/Linux part 2 a.k.a. shell scripting
The scripting facilities of the UNIX shells ksh and bash, the batch-editor sed and the report generating language awk.
DNS
The Domain Name system fundamentals.
The Python Programming Language
Introduction to the Python Programming Language, including the standard library, regular expressions and object oriented programming.
Ansible 101
An introduction to the Ansible Configuration Management and Continues Integration tool

What Not To Do

HTML formatted email has a very high chance of ending up in my spam folder, where it will probably be discarded. Also, please use a subject line in your message.

I will not authenticate messages sent to people with strict anti-spam tools, like mail blocks and stuff. I have better things to do with my time. We all hate spam, but don’t push the problem to other people.

Please, do not send me spam email (doesn’t everybody want that??). I will charge you a dollar or a euro for every spam mail sent to me for transport, storage and annoyance. So if you send spam, be prepared to pay.


HAM Operator

I’m a licensed HAM operator (with CW included) with call sign PA1TON and my QTH is in Groesbeek, The Netherlands. The Maidenhead locator is JO21xs.

This site can be reached with the DNSSEC secured URL as well.


Geek info

Have a look at Geek Code to see what it means. And, yes, I do think that I am a nerd. And I am proud of it. I’m glad I’m not a sports-jock. I would get rather bored with asking: “Would you like fries with your burger, sir?

-----BEGIN GEEK CODE BLOCK-----
Version: 3.12
GCS/E/IT d- s-:+> a+>? c++ ULSHA*++++$ P++ L+++ E--- W++ N++
O- K- w--- !O M V PS+ PE+ Y+ PGP++ t++@ !5 X+ R-> tv+()
b++>+++ DI++ D G++>+++ e++ h r+++ y+ C++
-----END GEEK CODE BLOCK-----

Github

I write a lot of shell scripts and other things for customers and for myself. Some of these could be useful to others, so I did put some of this on Github. Go ahead and use it.


CA Cert

I am a certified CA Cert assurer (CACert) with assurer certificate number 000507 .

If you do have a CACert account and would like to be assured, just send an email to make an appointment. (Living near Groesbeek would be handy, of course)


Comments

Comments are enabled through the DisQus service, so it’s possible to comment on stuff on this site.

Please do not spam.


Copyright and stuff like that

This site and all the software available for download is completely copyright by me (Ton Kersten) and is licensed under a Creative Commons Attribution-Noncommercial-Share Alike 3.0 Unported License (except when stated otherwise).

Creative Commons License

Creative Commons License

So, if you like an article and want to use it for something, please do go ahead. You do need to link to my site or mention me when you do use it. And, of course, it would be very nice if you would let me know.


HTML and CSS Compliant

Care has been taken to make this site XHTML 1.0 (transitional) compliant. There’s only one minor problem, and that has to do with the Disqus comment system. They want a tag called data-disqus-identifier and that’s not a proper HTML tag. I haven’t found a browser that borks on this, yet. If you do, please let me know.

Last time I checked [2014-04-14] it was.
Valid XHTML 1.0 Transitional Valid CSS!


How it’s created and maintained

This site is generated with We-Blog, Pandoc and (of course) Vim and is served from Linux with Apache.