Tag: Linux

Ymuse ‣ Go and the Music Player Daemon client

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Now I’m finally ready to tell you what’s been keeping me busy during the last three weeks.

I’ve spent them learning a new programming language called Go.

The process went so well that I even managed to write a new media player application Ymuse. Or, to be precise, a Music Player Daemon client.

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Save trees, use Xournal

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Joining the mass sustainability hysteria spree, I’d like to put my two cents into the future of my and others’ grandchildren.

Many interactions with Dutch institutions result in a filled-in and signed document that needs to be emailed or uploaded.

Or another example: you visit Russian Post where you’re requested to fill out 117 copies of a certain form. Do not give in to the provocation and do not fill it in by hand!

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Slow connection to MySQL in Docker

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My current project makes use of the MySQL database, which runs in a Docker container.

At a certain moment connecting to the database became excruciatingly slow, taking tens of seconds to establish a single connection. After that everything would work as expected.

The application opens a connection some hundred times, so the startup time had become really unacceptable.

I’ve spent a lot of time hunting that down, and then even more time looking for a solution as I failed to find any on StackOverflow. But finally I’ve solved this.

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Tuning Ubuntu for SSD

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In my last post I told you about upgrading an iMac with a solid-state drive (SSD). These drives are very fast (read throughput is usually ca. 500 MB/s if connected via a 6 Gbps SATA III) and completely silent.

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How-to: Multiplicity in Gimp

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My today’s story is about a well-known yet impressive graphic editing technique called multiplicity. It allows you to multiply objects on a photo—most commonly people, but it can be just as well kittens or lawn-mowers. Using this technique, you can make pictures like this:

I’m a Linux guy and hence my favourite graphic editing tool is Gimp, but the same can be done with any other editor that supports layers and masks.

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