Author Archives: admin

Go: False positive virus detection

Recently to my surprise antivirus software detected virus in my freshly build golang program. Doing research I found interesting article from Melle Boudewijns. So I created simple golang program hello_flags.go: Then I compiled this source file with flags and execute … Continue reading

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Text file to json array with jq

Lets say we need convert a text file into json array a process it. More information about jq itself can be found in the manual. First of all let’s create a test file with the first four Greek alphabet letters: … Continue reading

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Wordle helper

Wordle is nice single webpage game at https://www.powerlanguage.co.uk/wordle/ There is a page with list of the many 5 letter words at https://7esl.com/5-letter-words/ Here is how to create a plain text file with 660 5 letter words: Then one can grep … Continue reading

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SVG: color-keywords with colors

At the World Wide Web Consortium (W3C) document SVG Color 1.2, Part 2: Language there are defined color-keywords. Here is that part of the definition updated with horizontal rectangle with color for all 147 color-keywords. color-keyword ::= ~”aliceblue” | ~”antiquewhite” … Continue reading

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SVG: Circular arc

The arc command (a or A) of the element <path> is used to define an elliptical path. The special case is the circular path. Contrary to the element <circle>, where the center of the circle and radius has to be … Continue reading

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Sellers.json

Would you like to find who is advertising with Google AdSense? There is a Google file sellers.json . Most objects have a property “is_confidential”: 1, but other objects could have a domain name and other information. Be aware, the file … Continue reading

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Carbon: How much is 1 ppm of CO2 in Earth atmosphere

On Earth day 2021 will be officially announced XPRIZE Carbon Removal sponsored by Elon Musk. ┬áNow there is a carbon dioxide content in the atmosphere 412 ppm. It would be good to know how much is actually 1 ppm of … Continue reading

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Carbon: What is a size of the 1 ton of CO2

On Earth day 2021 will be officially announced XPRIZE Carbon Removal sponsored by Elon Musk. We know now, that a scale model at a level of carbon removal of 1 ton of CO2 per day has to be demonstrated. So, … Continue reading

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NET-100-64-0-0-1

Did you find your WAN IPv4 address in the range 100.64.0.1 to 100.127.255.254? Then most likely your Internet Service Provider (ISP) is utilizing shared address space. Most likely that address would be behind Carrier-Grade NAT (CGN). See more RFC 6598.

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Go webserver on Apache

Go language allows create very easily webserver. Let’s consider a full working example of a simple web server at https://golang.org/doc/articles/wiki/ implemented in the file web8080.go: Code above could be one of the several web application implemented in go language. Each … Continue reading

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