Deepak Prasad

You can now use dnf command to remove old kernels from RHEL/CentOS 8 Linux. package-cleanup doesn't work any more. Use oldinstallonly with installonly_limit

There are different methods using which you can install ansible using default package manager such as yum, dnf, apt, Using pip and using source compile file

Step by Step instructions to install mongodb on AlmaLinux 8. Access mongodb shell, create admin user, establish a connection with mongodb server using a different client. configure firewall and selinux

In this tutorial I will cover the basics of tmux from scratch using various tmux commands to create session, windows, splitting panes, killing session etc

How to grep multiple strings and patterns in single line from a file in Linux or Unix? Is it possible to grep multiple strings using single command from a file?

Step by step instructions to install DVWA in Kali Linux with screenshots.

Step by Step instructions to install node.js and npm on kali linux with screenshots. Two different methods to install node.js and NPM using default repository and official archive

In this tutorial I have shared the commands and examples to remove directory in Linux properly without loosing any data. Delete directories and sub directories using single command with and without regex

Mount ConfigMap as file into an existing directory in Kubernetes with and without helm charts. Mount files into an existing volume inside Pod container.

In this article we will explore the usage of Kubernetes Secrets using some real time scenarios and examples. Ideally we use Secrets to declare confidential

Unlock the potential of Ansible Vault for enhanced security and automation. Explore best practices, avoid pitfalls, and safeguard your sensitive data positively with Ansible Vault.

Step by step instructions to mount multiple secrets to same directory in Kubernetes. 4 different ways to mount multiple secrets to same path.

Step by step Guide to install Oracle Virtual Box on RHEL / CentOS 7 Linux. To install Oracle Virtual Box you need EPEL repo. Oracle Virtual 5.2 is out now

Kubernetes ConfigMap decouples the application data from the application. It is used to set and define environment variables inside the Pod container. You can also mount the values as files inside the Pod

Getting started with go, installing go using package manager, install go-1.19, setup your own go workspace, What is GOPATH and GOROOT, How to integrate visual studio code with GO, Required extensions for GO in visual …

SQL Time functions can have different versions in different Database Management Systems like MySQL, ORACLE, and MS SQL Server. NOW(), CURDATE(), CURRENT_TIME(), CURRENT_TIME, CURTIME(), CURRENT_TIMESTAMP(), …

In Java, currying function is the mechanism of breaking down a multi-argument function to form the multiple functions with single arguments such that the output remains same.

The NodeJS REPL(Read-Eval-Print-Loop) server provides a programming environment like a Linux shell where a user can evaluate JavaScript expressions and gain access to node modules.

But how do you learn Python as a beginner? Well, there are multiple ways you can go about it.

Comparison and differences between pass vs break vs continue statement in python with 1-1 comparision and examples.

In this tutorial we will cover different examples using openssl command, so in short let's get started with our openssl cheatsheet.

Step by step guide to configure openstack high availability (HA) using pacemaker and corosync for openstack controller nodes with HAProxy and VIP.

Configure network bridge using nmcli for static and dhcp ip. nmcli connection reload. nmcli onboot. nmcli network manager centos 7. nmcli con add modify

Steps to enable SSH access in linux rescue mode and configure network in rescue mode in RHEL/CentOS 7/8 with example transfer sosreport file inst.sshd=1

Configure Network Bound Disk Encryption (NBDE) based LUKS Disk Encryption using Clevis and tang Server in CentOS/RHEL 7/8 Linux Boot without password clevis key

Create local repository using yum and dnf in RHEL 7 and 8 Fix there are no enabled repos Perform yum install without subscription. Create Offline yum repo Linux

Perform Linux patch management in RHEL 6/7/8 Linux in LIVE production environment. Identify vulnerabilities list and security updates list then apply patch

matplotlib.pyplot is a sub-library of Python's matplotlib library that provides convenient ways to create static, animated, and interactive visualizations in

A color gradient is a way to smoothly transition between two or more colors. A circular gradient is a type of color gradient that transitions in a circular

In this tutorial we will cover different examples using multiple methods to get size of dataframe or series object in Pandas. Get column or rows count, entire dataframe size, values count and much more