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Category Archives: workday
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. Now 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
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
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.
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
Weather: Daily Loop
Cooperative Institute for Research in the Atmosphere (CIRA) has a great page named Daily Loop. One can look to the weather almost in the real time.We can be fascinated by view of the California wild fires: 2020-09-09 – Large fires … Continue reading
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Brief go lang programs
Here is list of brief go lang programs Thursdays biweekly Corner clothesline Hexa string back to ASCII SVG command path for a circle arc URI percent conversion Printing bit literals – in this case ‘gm’ String to binary bytes Binary … Continue reading
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Google Cloud Next
Google Cloud Next conference is for year 2020 online, see https://cloud.withgoogle.com/next/sf/onair#infrastructure Here is a play list of the presentations in the last few years:201920182017
REGEX at awk file
More complex awk text processing is better to put in the file. And there can be regex filter as well. Below is a simple example utilizing awk code in the file xml-info.awk, which prints information only for XML files. $ … Continue reading
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ssh password-less
Here are steps, how to do it in Linux type environment on LOCAL host: USER_REMOTE=username@remote-host ssh-keygen -t rsa #no password ssh $USER_REMOTE mkdir -p .ssh cat .ssh/id_rsa.pub | ssh $USER_REMOTE ‘cat >> .ssh/authorized_keys’ ssh $USER_REMOTE ‘chmod 700 .ssh; chmod 640 … Continue reading
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Hello Website on GKE Cluster
Let’s explore, how deploy web application “Hello Website” written in go language at Google Kubernetes Engine Cluster. Source code for “Hello Website” in the file helloweb.go Source code for dockerfile Steps: At https://console.cloud.google.com/apis/library search for Kubernetes (k8s) and then enable … Continue reading