Wednesday, January 25, 2012

Infographics about use and power of e-mails

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Wrike is project management and collaboration tool, using e-mails a lot. Today I received their posing about real power and use of e-mails,...
Sunday, January 15, 2012

Is "Google about" sign of Google new era?

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Few days ago, Google has started Google Search+. I am not yet much familiar about what is real value of this service, but I noticed one bi...
Saturday, December 31, 2011

PF 2012 - Hamster the Backuper - Křeček Záložník

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Česky Z praxe s dopravními informacemi víme, že hodnotu mají jen ta data, která jsou opravdu dostupná. Pro případ, že by si štěstí vzal...
Friday, December 23, 2011

Encrypting and decrypting files using openssl

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Creating simple backups I felt, the backup shall not stay in form of plain zip archive, not even encrypted one (as they easily reveal file n...
Thursday, December 22, 2011

Performance Analysis of OpenVPN on a Consumer Grade Router

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Investigating OpenVPN and what throughput I can expect, when transferring stream of ascii data, I found nice paper:  Performance Analysis of...

iperf and jperf - Tools for measuring network performance

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iperf is tool, which allows to measure network performance for both, TCP and UDP traffic. iperf is command line version, jperf is GUI writt...
Sunday, November 27, 2011

Excel formula to convert ISO 8601 formatted timestamp into Excel datetime

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Assume, you have a spreadsheet having in A column timestamps formatted in ISO 8601 manner, like "2011-11-23T14:00:00Z" (you may ig...
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