How to split a number in a filename in Linux? [closed] - linux

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I have this file name:
ABCD1B02.C50.N1995009.2019353.dat
I would like to extract the final 7 numbers and put space like this
extr=2019 353;

In bash script:
fname='ABCD1B02.C50.N1995009.2019353.dat'
extr="${fname:${#fname}-11:4} ${fname:${#fname}-7:3}"

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Hello everybody, I would like to make jigzaw puzzle game with pixi.js [closed]

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https://scratch.mit.edu/projects/editor/?tutorial=getStarted
Here is a drag and drop feature, which is I would like to implement in my game.
What I have to do for this.
Now, I just finished drag function with pixi-viewport.

Convert MAC addresses (Excel) [closed]

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is there a formula in Excel, which can convert MAC address format 11:22:33:44:55:ab to 1122-3344-55ab?
Thank you!
nest SUBSTITUTES:
=SUBSTITUTE(SUBSTITUTE(SUBSTITUTE(A1,":","-",4),":","-",2),":","")

I am not able to access this filename [{"filename":"54526108_1946746692102415_4003062236024143872_n.jpg"}] [closed]

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I have tried console.log(filename.filename); but it is not working.
[{"filename":"54526108_1946746692102415_4003062236024143872_n.jpg"}]
It’s an array with an object in it. Just try
console.log(filename[0].filename)

What is the difference between IN and EXISTS [closed]

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I am reading tutorials and practice webs and I don't see the difference between IN and EXISTS
And one more question:
when should I put the subquery in the SELECT section, in the FROM section, in the WHERE section, in the HAVING section?

How to identify Encoding [closed]

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Can you please cout me in which format this string is encoded
\u041f\u0440\u0430\u0446\u0430",realty:"\u041d\u0435\u0440\u0443\u0445\u043e\u043c\u0430\u0441\u0446\u044c",hitech:"Hi-Tech",sport:"\u0421\u043f\u043e\u0440\u0442",files:"\u0424\u0430\u0439\u043b\u044b",lady:"\u041b\u0435\u0434\u0437\u0456",
deti:"\u0414\u0437\u0435\u0446\u0456",health:"\u0417\u0434\u0430\u0440\u043e\u045e\u0435",travel:"\u041f\u0430\u0434\u0430\u0440\u043e\u0436\u0436\u044b",cards:"\u041f\u0430\u0448\u0442\u043e\u045e\u043a\u0456",horo:"\u0413\u0430\u0440\u0430\u0441\u043a\u043e\u043f\u044b",pogoda:"\u041d\u0430\u0434\u0432\u043e\u0440'\u0435",afisha:"\u0410\u0444\u0456\u0448\u0430",video:"\u0412\u0456\u0434\u044d\u0430
That looks like a fragment of a JSON document with Cyrillic text.

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