My name is Philipp C. Heckel and I write about nerdy things.
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Posts Categorized / Programming


  • Jan 29 / 2010
  • 0
Administration, Linux, Scripting, Security

WP-UN: WordPress version update notification with cron

WordPress is a very popular open-source blog software and is used widely throughout the Internet. However, with great success comes great attack potential: like any other wide spread open-source software, WordPress is target for frequent hacking attacks and spam-bots. All the more important is it to always update the distribution to the latest release.

As Debian/Ubuntu user, I am spoiled when it comes to update management: apt-get updates most of my software, and apticron notifies me when updates are available. For WordPress however, the packaged versions of Debian/Ubuntu are really old and less adjustable which unfortunately makes a manual installation inevitable. While there are several automated WordPress update mechanisms out there, I couldn’t find a simple notify-on-update tool.

This post introduces the WordPress Update Notifier (WP-UN), a simple script that frequently compares the installed WordPress version with the latest available one. If a new version is available, it sends an e-mail to a given address.

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  • Apr 07 / 2009
  • 2
Linux, Scripting, Security

Simsafe: Simple command-line password safe

Nowadays, it appears to me as if almost everything in the big and fancy world of IT comes with the need to sign up and create an account. Every little online tool, every social networking site and of course every instant messenger account. System administrators hits it even harder: The setup of a server machine requires to create lots of different users for every kind of service, — be it Postfix, Sendmail, Courier, MySQL, PostgreSQL, etc. Most of them require some kind of super-user password or account.

This is where a password manager comes in handy: Open the password vault by typing in the master password, put in all you secrets and crucial information, save it and be happy. As if!

Almost every password manager I found on the Web was crowded out by details so that it took minutes to add a single account. What I wanted was something like a text-file with password — and that’s what I made: A simple command-line password safe.

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  • Mar 16 / 2009
  • 3
Distributed Systems, Programming

KadS: a secure version of the Kademlia protocol

There are various peer-to-peer protocols out there. All of them focus the decentralisation of storage and other system resources. Most implement a distributed hash table (DHT) to store information. That is, each node of the network only holds a small part of the hash table but is able to locate and retrieve any requested entry. Kademlia, a protocol designed by two NYU students in 2002, is one of them.

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  • Sep 30 / 2008
  • 48
Linux, Office, Scripting, Synchronization

GCALDaemon deb-package for Ubuntu/Kubuntu

GCALDaemon is a great tool to synchronize many of Google’s services such as Google Calendar and Contacts with your local PC. Unfortunately, the installation on Ubuntu/Kubuntu and any other Linux distribution is still not the most comfortable. For this reason, I sat down some hours and packed the tool into a deb-package and additionally added a nice command line tool to simplify some of the basics.

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  • May 16 / 2008
  • 209
Programming

Roundcube login via PHP script

Roundcube is an AJAX/PHP based e-mail application which is really flexible and easy to use in comparison to other free web based solutions.

For the customer interface of Silversun, I wanted to use RC as the internal web mail application and therefore had to embed it into my system. To avoid that the customer has to log in twice (customer interface and Roundcube), I had to simulate the login request with a PHP script.

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