What is Hard Link In Linux, a hard link is merely an additional name for an existing file on Linux or other Unix-like operating systems. Any number of hard links, and thus any number of names, can be created for any file. Hard links can also be created to other hard links. …

In Linux, like in other operating systems, a process is an instance of a program in execution. It’s the fundamental unit of work in a computer system. Each process in Linux is assigned a unique Process ID (PID) by which it can be referred. Understanding processes and being able to…

Regular expressions, often abbreviated as “regex” or “regexp,” are patterns defined using a specific syntax to match or modify text. These patterns consist of instructions executed on a string, yielding a matched subset or an altered version of the input. They can match explicit text, repeat patterns, combine patterns, branch…

Namespaced Packages Namespaced packages, in the context of Linux or any Unix-like system, often refer to a way of organizing related packages under a common “namespace” to avoid conflicts and to clarify their purpose or affiliation. The concept of namespaces comes from programming, where a namespace is a container that holds a…

As the paradigm shifts towards containerized applications, K8s has emerged as the leading platform for orchestrating these applications at scale. Among various architectural elements in K8s, Pods are the smallest deployable units. An understanding of how network communication occurs between these entities is key to grasping the overall K8s architecture…

K8s Troubleshooting handbook — Note, full K8s troubleshooting mind map is available at: “K8s Troubleshooting MindMap” What is “0 Out of X Replicas Created” Error In K8s, if you encounter an error message like “0 out of X replicas created”, it means the ReplicaSet has been unable to create the desired number of Pod replicas. …

What is the ln command? The ln command is a standard utility on Unix-like operating systems used to create links between files. It supports creating both "hard links" and "symbolic (or soft) links", providing flexibility in file management and organization. There are two main types of links: hard links and symbolic (or soft) links. A…

What is enum Module Enums, short for “enumerations,” are a programming construct that allows you to define a set of named values, creating a more expressive and maintainable codebase. …

Flask, as a microframework, offers the flexibility to choose the data source for applications, as well as extensive library support for interacting with various data sources. It provides libraries for both SQL and NoSQL based databases. …