Janos

👋 Hi!

I’m a software engineer specializing in server applications and system-level software development, but sometimes I venture into the front end world too. Quite often I find myself taking a deep dive into a topic that tickles my brain.

When I’m not coding I like spending time outdoors, such as cycling, climbing. We are writing this blog together with my partner Sanja.

You can find most of my work on GitHub.

Logging PHP errors to syslog-ng

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Ever so often I get to set up hosts for running PHP. When running a load balanced solution, you have more hosts and reading logs gets complicated, development gets tedious. So what helps, is a central logging server. This is pretty easy to set up with syslog-ng, however PHP has a annoying habit of logging everything with the NOTICE error level.

Debugging applications with strace

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There are times, when we get an application and need to find out what it does fast. We don’t have the time to read the source code. Fortunately there are multiple tools to our rescue, one of which is the strace Linux utility. strace means system call trace, it shows us every system call the application does, such as opening or reading a file, writing data to a network socket. It’s not a magic pill, it won’t show the internal working of the application, but it’s still very useful to find out what it does externally (IO operations and such).

The Big Exim Tutorial

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In September 2009 I created the big Exim tutorial consisting of 5 parts on the Hungarian Unix Portal. In January 2010, I transfered it to my Hungarian site. Now I’m translating it to English.