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Outlook 2002 Contacts CSV to vCard via Bash & Awk

Saturday, December 22nd, 2012

Yes, I know you can import stuff easily into ‘the cloud’ – I don’t care to share my contacts (directly) with any ‘cloud vendor’; I simply want to move my contacts from my old Cellphone to my new Android phone. Exporting a contact list from Outlook (Ancient version, 2002) is simple using CSV (comma separated Continue reading →

RRDTool Graphs – refining Color Temperature Gradients

Monday, May 28th, 2012

So, what happens when you have a ‘hole’ in your RRD data source upon which you base a color gradient?   RRD Graph – gaps in data – attic-temps-Zone-Y   The first version of this graph used a gradient peak that was two points above the peak – but the holes were still there… The Continue reading →

Creating Color Gradients with RRDTOOL & Bash (using temperatures)

Thursday, May 3rd, 2012

You would think that it would be easy to locate just about any information on the Internet but that’s simply not true.  While I found many examples (using various approaches) of generating graphs with gradients using rrdtool I did not locate any dynamic solutions, i.e.: I have data in multiple RRDs, I need to extract Continue reading →

Reading DS18B20 Temperature sensors with DigiTemp

Wednesday, April 25th, 2012

Over the past several months I have collected quite a number of temperature readings from a custom sensor network.  I started with ~30 sensors and maxed out at ~42 sensors (due to limitations/quirks of 1-Wire protocol/networks.)  For background on this project visit the related posts. I am using Digitemp because it simply works – but Continue reading →

PHP – decoding ‘gzinflate(str_rot13(base64_decode’ hack attempts

Monday, April 9th, 2012

A recent ‘alarm’ about RFI (remote file inclusion)  ‘attacks’ against PHP coded web sites (i.e. any WordPress site) got me curious about some of my log messages.  In this case the web server/PHP application were not compromised due to a somewhat guarded server configuration.  The configuration also ‘captured’ the triple-encoded attack code (some excerpts below.) Continue reading →

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