Linux Tutorials: How to setup SSH keys on Ubuntu/ Linux

Introduction: SSH, or secure shell, is an encrypted protocol used to administer and communicate with servers. When working with an Ubuntu server, chances are you will spend most of your time in a terminal session connected to your server through SSH. In this guide, we’ll focus on setting up SSH keys for an Ubuntu 20.04 installation. SSH keys provide a secure way of logging into your server and are recommended for all users. Steps: exitsudo git clone git@<Your_Repository_SSH_Clone_URL>

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This page isn’t workingwww.myhospitalnow.com is currently unable to handle this request. HTTP ERROR 500

The “HTTP ERROR 500” message indicates that there is an internal server error with the website you are trying to access. This could be caused by a variety of factors, including a problem with the website’s code or database, issues with the web server itself, or network connectivity problems. Unfortunately, there isn’t much you can do to fix this error on your end. The best course of action would be to try accessing the website again later, as the issue

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No suitable Android AVD system images are available. You may need to install these using SDK manager,

This error message indicates that the Android Virtual Device (AVD) system images required for the emulator to run are not available on your system. To fix this issue, you need to download and install the required system images using the SDK manager command. Here are the steps to download and install the system images: Replace android-27 with the version of Android you want to use, and ‘google_apis_playstore’ with the target system image you want to download. ‘x86‘ is the target

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How to Pull To Refresh In Flutter using refresh indicator

Step – 1 refresh-indicator-pull-to-refresh-indicator-in-flutter RefreshIndicator Widget: RefreshIndicator is a widget in Flutter that supports Material’s swipe-to-refresh. It works by showing a circular progress indicator when the child’s Scrollable is overscrolled. If the user ends the scroll and the indicator has been dragged far enough, it will call onRefresh. You can define your own callback function. Usually the callback contains code to update the data. Add RefreshIndicator Widget and add a function to do while refreshing in onRefresh. Follow me for

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How to show items from specific index in a listview builder flutter

how-to-show-items-from-specific-index-in-a-listview-builder-flutterhow-to-use-conditional-statement-within-child-attribute-of-a-flutter-widget-cen I want to start showing the list items from index 5 Check this out ===========OR=========== I am not sure if this is what you are looking for, but you can give it a try. To only show specific items based on certain conditions, you can use the “Visibility” widget as the example shown below. Maybe this is what you are looking for

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SSL Error: no alternative certificate subject name matches target host name

Error ERROR: cURL error 51: SSL: no alternative certificate subject name matches target host name ‘www.myhospitalnow.com’ (see https://curl.haxx.se/libcurl/c/libcurl-errors.html) {“exception”:”[object] (GuzzleHttp\\Exception\\RequestException(code: 0): cURL error 51: SSL: no alternative certificate subject name matches target host name ‘myhospitalnow.com’ (see https://curl.haxx.se/libcurl/c/libcurl-errors.html) at /opt/lampp/htdocs/myhospitalnow/mhn-admin-ms/vendor/guzzlehttp/guzzle/src/Handler/CurlFactory.php:201 Solution go to .env file and check this wrong This is right only mistake www.

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How to Increase Session Time in Laravel?

Hi Dev, This article goes in definite on the most proficient method to increment meeting break in laravel. you will figure out how to set meeting lifetime in laravel. I might want to tell you the best way to set meeting break in laravel 7. we will assist you with giving illustration of laravel increment meeting break. You can undoubtedly increment meeting lifetime in laravel 5, laravel 6, laravel 7, laravel 8 and laravel 9 rendition. To build your meeting

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How to Fixed this Error :- Using AWS SES SMTP- error 554 Message rejected: Email address is not verified. The following identities failed the check in region

Getting this error on the email address I am trying to send an email to! Not sure why I need to verify an email I am sending to which doesn’t belong to me? Step 1: Please check your .env file at MAIL_FROM Step 2: Go to Project mail Model:- app\Mail\ContactMail.php And change your Mail from Step 3: Problem solved

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How to Fixed this Error :- ERROR: Failed to authenticate on SMTP Server with username “sdfsdfg1vgfgg” using 2 possible authenticators. Authenticator LOGIN returned expected response code 235 but got code “535”, with message “535” Authentication Credentials Invalid^M

I have an application that conveys messages. All was working great until I associated this email address to my Gmail account to have more straightforward admittance to it and to have the option to answer to clients. Presently I’m getting a mistake on the site: (1/1) Swift_TransportExceptionNeglected to confirm on SMTP server with username “me@email.com” utilizing 2 potential authenticators.I have attempted the accompanying to fix this issue: I have checked the mail settings and they are all right. Go .env

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How to Install and Configure Flutter SDK on Windows 10, Just 7 Steps

Flutter, which can be used to create attractive, natively-built applications for mobile, desktop, and the web from a single codebase, is essentially Google’s portable user interface (UI) toolkit. Flutter is open-source, free, and works with already written code. Due to its simple, yet effective commands and user-friendly interface, it is used by businesses and developers all over the world. We will examine the installation of Flutter on Windows in this article. Installing Flutter on Windows: To install Flutter on Windows,

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Different types of linked list

to date, we’ve treated the kind of list referred to as a singly related list, or linear related list. but, there are also numerous exclusive varieties of linked lists based at the operations worried: Doubly linked list Circular linked list Multi-linked list Doubly linked lists In a doubly connected listing, there are two hyperlinks on every node: one to factor to the next node and any other one to the previous node. wherein the singly related list is unidirectional, the

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Using Linked Lists

We realize plenty approximately arrays already. Now, we are going to shift our awareness to a brand new form of records shape called a list. it’s miles one of the maximum used statistics systems inside the programming international. In most of the programming languages, the array is a fixed size structure. As a end result, it can’t grow dynamically, and shrinking or doing away with an object from a set size array is also intricate since we have to shift

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Implementing sets using a PHP array

a hard and fast is a surely a group of values without any precise order. it can contain any facts kind and we can run different set operations consisting of union, intersection, supplement, and so on. As a hard and fast only contains values, we will assemble a primary personal home page array and assign values to it in order that it grows dynamically. the subsequent instance indicates two units that we have described; one consists of some peculiar numbers

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Implementing struct using a PHP array

As we already recognise, a struct is a complicated statistics type in which we define more than one houses as a set in order that we are able to use it as a unmarried records kind. we are able to write a struct the use of a personal home page array and class. right here is an example of a struct the usage of a php array: it’s far actually an associative array with keys as string. A complex struct

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Understanding hash tables

In programming language, a hash desk is a records structure that’s used to make an array associative. It way we will use keys to map values instead of the usage of an index. A hash desk should use a hash function to compute an index into an array of buckets or slots, from which the desired cost can be observed: As we’ve stated several times, a php array is virtually a hash desk and therefore it supports associative arrays. We

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Performance comparison between a regular PHP array and SplFixedArray

one of the key questions we encountered in the remaining segment turned into, why ought to we use SplFixedArray in preference to personal home page arrays? we’re now prepared to explore the solution. We got here across the concept that Hypertext Preprocessor arrays are truly now not arrays rather than hash maps. allow us to run a small example code in Hypertext Preprocessor five.x model to peer the reminiscence utilization of a Hypertext Preprocessor array.allow us to create an array

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Use of multi-dimensional arrays to represent data structures

one of the key questions we encountered in the final phase become, why need to we use SplFixedArray as opposed to Hypertext Preprocessor arrays? we’re now equipped to explore the answer. We came throughout the idea that personal home page arrays are without a doubt not arrays as opposed to hash maps. allow us to run a small instance code in php 5.x model to peer the memory utilization of a Hypertext Preprocessor array. allow us to create an array

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Use of multi-dimensional arrays to represent data structures

In coming chapters, we can communicate approximately many extraordinary information structures and algorithms. one of the key statistics systems we’re going to recognition is the graph. We already recognise the definition of graph information systems. maximum of the time we are able to be the usage of personal home page multidimensional arrays to symbolize that records as an adjacency matrix. allow us to keep in mind the following graph diagram: Now if we take into account each node of the

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