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Development

Print below series in single loop and using single variable only

I’m trying to print the following sequence infinitely: 0 100 1 99 2 98 . . . . . . 97 3 98 2 99 1 100 0 99 1 98 2 97 3 . . . . . . 3 97 2 98 1 99 0 100 . . . . . . However, […]

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Development

How to use scss variables in create react app?

I create my app with create-react-app and I try to use shared scss files. I have folder with them files common/styles/. And also I have some scss files there (_reset.scss, _variables.scss). My _variables.scss: $color-main: #1E700F; My index.scss: @import “variables”; Then I connect my index.scss and my index.js file import React from ‘react’; import ReactDOM from […]

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Development Linux Ubuntu

How to enable full permissions on internal secondary HDD?

I have a secondary internal HDD formatted to ext4. How can I enable full permissions so that I, other users, and the Samba network can read, write, and execute from the hard drive? Problem: Currently on the second hard drive I can access documents and create and delete files in nautilus file manager. But I […]

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Development Linux Ubuntu

How to restore to default log in

Color is gone from purple to black and white while starting the system and after that for few seconds black screen appears and then ubuntu budgie logo appears and then log in appears, so how can i get it to default so color and ubuntu loading screen is restored?

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Development Linux Ubuntu

presseed file and bash script

I want to use bash script, as parametr in my pressed file for automation install Ubuntu 18.04 from my local repository. I want get hostname from my script, also I want to install alternatives for dm, ubuntu-desktop, ubuntu-mate-desktop, etc. Default pressed support only ubuntu-desktop and kde. Help me?

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Development Linux Ubuntu

ImportError: cannot import name GUdev, introspection typelib not found

Can anyone suggest how I fix up the errors from standard application of Kazam screenshot app: alistair@alsE590:~$ kazam /usr/bin/kazam:77: DeprecationWarning: dist() and linux_distribution() functions are deprecated in Python 3.5 dist = platform.linux_distribution() Traceback (most recent call last): File “/usr/bin/kazam”, line 148, in <module> from kazam.app import KazamApp File “/usr/local/lib/python3.7/dist-packages/kazam/app.py”, line 36, in <module> from kazam.backend.prefs […]

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Development Linux Ubuntu

Touchscreen driver for Shuttle X50V4 AIO computer

I’ve searched high and low and can’t find how to get a driver for the touch screen. The point was to make this a wall mounted computer so this is needed. I ran lsusb and it’s listed but otherwise doesn’t show up in the additional drivers menu. The device type is D-Wav Scientific Co., Ltd […]

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Development Linux Ubuntu

error while loading etc/profile

I am using lenovo z500 with ubuntu 18.04. I wanted to fix my brightness problem and found solution to modify default display manager file. But now I am not able to login. Error is cat: /etc/X11/default-display-manager: No such file or directory. I was searching for solution, but cant get it working. I am able to […]

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Bitcoin Cryptocurrency Development

What is the currently most efficient and reliable method to store the Bitcoin blockchain in a local database?

I have seen several posts on this before, and have tried all the suggested solutions, but I can’t get any of them to work. I am interested in analysing transactions with the OP_RETURN opcode for a project, and need to dump the entire Bitcoin in a database to start working on that. I have already […]

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Bitcoin Cryptocurrency Development

when exchange move their coins from their hot wallets to their cold wallets

recently I have noticed that exchanges such as Binance have two sets of wallets for their coin, one hot and one cold(or maybe couple of each) so I was wondering when they transfer funds from their hot wallet to their cold wallets? is it happen for example every night, or there is a specific threshold […]