Category Archives: Scratch Pad

Making your network connected HP ENVY Photo 7855 print again

Posted on Feb 19, 2021 by Serguei Dosyukov

HP printers seems to always being stop-and-go solution. Anything from upgrading to new version of Windows, switching local to network or wifi can throw them off. Over years I had number of HP and Canon printers and latest device is … Continue reading →

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SearchWP and XPDF support

Posted on Apr 5, 2018 by Serguei Dosyukov

Introduction SearchWP is a nice WordPress plugin which allows to extend WordPress search capabilities to various content format beyond just page text. Here I am focusing on PDF indexing specifically. If you have any PDF files published and want them … Continue reading →

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Keeping CentOS with times – PHP 5.5

Posted on Jan 20, 2015 by Serguei Dosyukov

This is second article related to CentOS somewhat outdated default setup. I have previously discussed Steps to update MySQL to 5.5 and now its time to look at PHP Introduction If you run VPS or dedicated server with CentOS 6.x … Continue reading →

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Symfony/PHP and “Too many open files”

Posted on Dec 1, 2014 by Serguei Dosyukov

Symfony seems to be somewhat resource hungry under some conditions and would leave trail of PHP errors indicating that there is “Too many open files”. There are several discussions on the topic suggesting that garbage collection mechanism does not close … Continue reading →

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How to upgrade mySQL on CentOS

Posted on Jul 8, 2014 by Serguei Dosyukov

By default CentOS 6.5 would be installed with MySQL 5.1 (it puzzles my as 5.1 is archaic, but well…). I was interested in updating my MySQL engine to 5.5 and just happen that when it become a necessity. So after … Continue reading →

Posted in CentOS Maintenance, Scratch Pad | 5 Comments

iOS AdHoc distribution failing? Look no further, you installed iOS 7.1 update

Posted on Mar 11, 2014 by Serguei Dosyukov

It was fun Monday, for some crazy reasons AdHoc distribution for iOS devices stopped working with nice little error Cannot install applications because the certificate for …. is not valid. Before you go all nuts and start blaming your recent … Continue reading →

Posted in iOS development, Scratch Pad | Tagged , , , | 1 Comment

Company promotion

Posted on Dec 15, 2011 by Serguei Dosyukov

If you follow my LinkedIn profile than you may know that I am working at WideOrbit out of Bay Area these days. Being with company for more than a year as Head of Development for Emerging Media Group, few products I … Continue reading →

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  • About

    From a junior developer through Sr Manager position, I was always interested in new technologies. Passionate speaker, IT junky, developer, architect, team lead, and development manager - many hats, one goal - making software better and being closer to people’s needs. For the most part I am using my blog as a scratch pad, writing small articles on things which I came across, was asked about more then once, and which would otherwise require additional research again and again.


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    I’ve used your Greydragon theme ever since I switched to using Gallery3. It looks very slick; it does everything that I want; it is easy to customise the appearance with its many options; image preloading makes it faster than other … Continue reading →

    ― Brian Stewart

    The greydragon theme is fantastic. It’s clean, stable and feature rich. It took me a while to decide to move to G3 but with a there like this one, I could no longer resist. Thanks!

    ― Ed

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