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apt-get vs apt vs yum | Debian-Based vs Red Hat-Based Linux Systems | Comparison and Differences

Ankaj Gupta

September 04, 2023

apt-get vs apt vs yum | Debian-Based vs Red Hat-Based Linux Systems | Comparison and Differences

# Debian-Based Systems vs Red Hat-Based Systems

The choice between apt-get and yum (or its modern replacement dnf) depends on the Linux distribution you are using. Each package manager is designed for specific Linux ecosystems, so there's no single "best" package manager that applies universally. Here are some considerations.

# Debian-Based Systems:

# Introduction

Debian-Based Systems refer to Linux distributions that are built upon the Debian operating system as their foundational framework. These systems inherit the core characteristics, package management tools, and philosophies of Debian, which is known for its emphasis on free and open-source software, stability, and adherence to strict licensing standards. Popular Debian-based distributions include Ubuntu, Linux Mint, and Debian itself.

# apt-get:

On Debian-based systems, such as Ubuntu, `apt-get` is commonly used. However, it's worth noting that in more recent Ubuntu versions, including Ubuntu 16.04 and later, the `apt` command is recommended over `apt-get` as it offers a more user-friendly and efficient experience.

# apt:

As mentioned, consider using the apt command on modern Debian-based systems for a better experience. It provides shorter and more intuitive commands.

# Red Hat-Based Systems:

# Introduction

Red Hat-Based Systems are a category of Linux distributions that are derived from or influenced by the Red Hat operating system. These systems share commonalities with Red Hat, including package management tools like YUM (Yellowdog Updater, Modified) and DNF (Dandified Yum), as well as the use of RPM (Red Hat Package Manager) package format. Red Hat-Based Systems are known for their stability, robustness, and suitability for enterprise environments. Prominent distributions within this category include Red Hat Enterprise Linux (RHEL), CentOS, and Fedora, each catering to specific use cases and needs in the world of Linux and open-source software.

# yum

Historically, `yum` was the package manager of choice for Red Hat-based systems. However, it's being gradually phased out in favor of dnf (Dandified Yum).

# dnf:

On recent Red Hat-based systems (CentOS 8 and later, Fedora), `dnf is the recommended package manager. It offers improved performance and dependency resolution compared to the older `yum`.

Summary of article:

Here's the key takeaway: Use the package manager that is native to your Linux distribution. If you're on a Debian-based system, use `apt` (or `apt-get` if you're on an older version). If you're on a Red Hat-based system, use `dnf (or `yum` if it's still available). Using the native package manager ensures compatibility and access to the software repositories specific to your distribution.
There's no need to compare them in terms of "best" since their performance and functionality are optimized for their respective ecosystems.

apt apt-get Debian-Based Systems Linux Linux Distributions Red Hat-Based Systems yum

Debian-Based vs Red Hat-Based Systems: A Comprehensive Comparison

Ankaj Gupta

September 04, 2023

Debian-Based vs Red Hat-Based Systems: A Comprehensive Comparison

# Debian-Based Systems vs Red Hat-Based Systems

Debian-Based Systems and Red Hat-Based Systems are two major categories of Linux distributions, each with its own characteristics, package management systems, and philosophies. Here's a comparison between the two:

# Debian-Based Systems:

# Introduction

1.) Package Management:

APT (Advanced Package Tool): Debian-based systems primarily use APT for package management. Commands like apt-get (or apt) are used to install, update, and manage software packages.

2.) Distributions:

Notable distributions: Ubuntu, Debian, Linux Mint, and many others.
Debian-based distributions are known for their stability and reliability, making them popular for server environments and desktop usage.

3.) Package Format:

Debian packages use the `.deb` file format.

4.) Philosophy:

Debian places a strong emphasis on free and open-source software. It has a strict policy regarding software licensing and includes only open-source software in its official repositories.

5.) Release Cycle:

Debian follows a stable release model with long-term support (LTS) versions. This results in a longer release cycle, with a focus on stability and security.

6.) System Configuration:

Configuration files are typically stored in the `/etc` directory, and package management tools like APT manage these files.

# Red Hat-Based Systems:

# Introduction

1.) Package Management:

YUM (Yellowdog Updater, Modified) and DNF (Dandified Yum): Red Hat-based systems historically used yum and have transitioned to `dnf` in more recent versions like CentOS 8 and Fedora. These tools are used for package management.

2.) Distributions:

Notable distributions: Red Hat Enterprise Linux (RHEL), CentOS, Fedora.
Red Hat-based distributions are often used in enterprise environments due to their focus on stability and support.

3.) Package Format:

Red Hat packages use the `.rpm` file format.

4.) Philosophy:

Red Hat, Inc., the company behind Red Hat-based distributions, offers commercial support and certifications for its products. While they include open-source software, they may also include some proprietary software and drivers.

5.) Release Cycle:

Red Hat-based distributions follow a release cycle with major versions and regular updates. CentOS Stream, a variation of CentOS, offers a rolling release model.

6.) System Configuration:

Configuration files are typically stored in the `/etc` directory, and the `yum` or `dnf` package manager does not manage these files directly.

Summary of article:

In summary, the choice between Debian-based and Red Hat-based systems depends on your specific needs and preferences. Debian-based systems are often favored for their stability and adherence to free software principles, while Red Hat-based systems are commonly used in enterprise environments with commercial support options. The package management tools and package formats also differ between the two ecosystems.

Debian-Based Systems Linux Linux Distributions Red Hat-Based Systems

Ankaj Gupta

March 14, 2023

Understanding the Differences Between Column(TIMESTAMP(timezone=True)) and Column(DateTime) in SQLAlchemy

# Column(DateTime) vs Column(TIMESTAMP(timezone=True))

This article explains the differences between Column(TIMESTAMP(timezone=True)) and Column(DateTime) in SQLAlchemy. Both data types are used to store date and time values, but they differ in whether they include timezone information. The article provides guidance on when to use each data type, based on the timezone requirements of your application. Additionally, the article notes that the behavior of these data types may depend on the specific database backend being used.

# Introduction

Both `Column(TIMESTAMP(timezone=True))` and `Column(DateTime)` can be used to define a column in SQLAlchemy to store a date and time value. However, there are some differences between the two types of columns:

# "Column(DateTime)"

`Column(DateTime)` stores a date and time value without a timezone. This means that the value will be stored in the database exactly as it is provided, without any adjustment for the timezone.

Note that: This can lead to issues if your application needs to work with date and time values across different timezones.

# "Column(TIMESTAMP(timezone=True))"

`Column(TIMESTAMP(timezone=True))` stores a date and time value with timezone information. This means that the value will be stored in the database with an offset from UTC that is determined by the timezone information provided with the value. When retrieving the value from the database.

Note that: SQLAlchemy will automatically adjust the value to the timezone of the application, if the timezone is specified.

Summary of article:

In general, it is recommended to use Column(TIMESTAMP(timezone=True)) if you need to work with date and time values across different timezones in your application. This will ensure that the timezone information is preserved and can be correctly adjusted as needed. However, if timezone information is not important for your use case, or if you have a specific reason to avoid using timezone information, then Column(DateTime) may be sufficient.
It is also worth noting that some database backends may treat `DateTime' and `TIMESTAMP` differently, so the specific behavior may depend on the database you are using.

API FastAPI flask Python sqlalchemy

Ankaj Gupta

March 14, 2023

Fetching Data from External API and Pass it to a Component in Next.js

Fetching data from an external API is a common task in modern web development. In this article, we will be showing how to use Next.js to fetch data from an external API and pass it to a component.

Step 1 : First, let's start by creating a new Next.js project. You can do this by running the following command in your terminal:


							
							  npx create-next-app my-app

This will create a new Next.js project with the name "my-app" in a new folder with that name.,

Step 2 : Next, we will install the axios library, which is a popular library for making HTTP requests. You can install it by running the following command in your terminal:


							
							  npm install axios

Step 3 : Now, let's create a new component in our Next.js project. In this example, we will call it "Card". This component will be responsible for displaying the data that we fetch from the API. Here's the code for the "Card" component:

➤ Example : Card.js;


import React from 'react'

export default function Card({ data }) {
  return (
    <div>
      <h1>Data List</h1>
      <ul>
        {data.map(item => (
          <li key={item.id}>{item.name}</li>
        ))}
      </ul>
    </div>
  )
}

As you can see, the "Card" component receives the `data` prop and renders it in an unordered list. Each item in the list is identified by its `id` and its `name is displayed.

Step 4 : Now, we need a way to fetch the data from the API and pass it to the "Card" component. Next.js provides a built-in function called getServerSideProps that allows us to fetch data on the server side before rendering the component. Here's the code for the getServerSideProps function:


import axios from 'axios'

const API_URL = 'https://your-api-url.com/data'

export async function getServerSideProps() {
  const res = await axios.get(API_URL)
  const data = await res.data

  return {
    props: {
      data,
    },
  }
}

In this example, we are using the `axios` library to make the API call to the specified `API_URL` and the response data is passed as a prop to the "Home" component. You should replace 'https://your-api-url.com/data' with the actual URL of your API endpoint.
It is a good practice to add error handling in case the API call fails, for example by using try-catch block or by using the .catch() method on the promise returned by axios.
In this way, you can fetch data from external APIs and pass it to components in your Next.js application. With the help of Next.js and the 'getServerSideProps' function, you can easily fetch data on the server side and ensure that your components are rendered with the latest data.

API external api nestjs react.js component reactjs

Ankaj Gupta

March 14, 2023

Understanding the Difference Between server_default=func.now() and server_default=text('now()') in SQLAlchemy

# server_default=func.now() vs server_default=text('now()')

This article discusses the differences between using server_default=func.now() and server_default=text('now()') in SQLAlchemy to specify a server-side default value for a column in a database table. The article explains how each method generates the default value, and provides guidance on when to use one method over the other based on your specific use case and database requirements.

# Introduction

Both `server_default=func.now()` and `server_default=text('now()')` can be used to specify a server-side default value for a column in SQLAlchemy, but they differ in how the default value is generated.

# "server_default=func.now()"

It uses a SQLAlchemy function (`func.now()`) to generate the current date and time on the database server. This function generates a SQL expression that is specific to the database dialect being used. For example, for a PostgreSQL database, it generates the SQL expression `now()`, while for a MySQL database it generates `CURRENT_TIMESTAMP`.

# "server_default=text('now()')"

On the other hand, `server_default=text('now()')` uses a plain text SQL expression (`'now()'`) to generate the current date and time on the database server. This expression is not specific to any particular database dialect and must be written in a way that is compatible with all database backends. In this case, the `text` function is used to create a SQLAlchemy `TextClause` object that represents the SQL expression.

In summary:

server_default=func.now() generates a database-specific SQL expression using a SQLAlchemy function, while server_default=text('now()') generates a plain text SQL expression using a `TextClause` object. The choice between the two methods depends on your specific use case and which approach is better suited for your database and application requirements.

API FastAPI flask Python sqlalchemy

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Top Stories

apt-get vs apt vs yum | Debian-Based vs Red Hat-Based Linux Systems | Comparison and Differences

# Debian-Based Systems vs Red Hat-Based Systems

# Debian-Based Systems:

# Introduction

# apt-get:

# apt:

# Red Hat-Based Systems:

# Introduction

# yum

# dnf:

Summary of article:

Debian-Based vs Red Hat-Based Systems: A Comprehensive Comparison

# Debian-Based Systems vs Red Hat-Based Systems

# Debian-Based Systems:

# Introduction

1.) Package Management:

2.) Distributions:

3.) Package Format:

4.) Philosophy:

5.) Release Cycle:

6.) System Configuration:

# Red Hat-Based Systems:

# Introduction

1.) Package Management:

2.) Distributions:

3.) Package Format:

4.) Philosophy:

5.) Release Cycle:

6.) System Configuration:

Summary of article:

Understanding the Differences Between Column(TIMESTAMP(timezone=True)) and Column(DateTime) in SQLAlchemy

# Column(DateTime) vs Column(TIMESTAMP(timezone=True))

# Introduction

# "Column(DateTime)"

# "Column(TIMESTAMP(timezone=True))"

Summary of article:

Fetching Data from External API and Pass it to a Component in Next.js

Understanding the Difference Between server_default=func.now() and server_default=text('now()') in SQLAlchemy

# server_default=func.now() vs server_default=text('now()')

# Introduction

# "server_default=func.now()"

# "server_default=text('now()')"

In summary:

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