Ashish Singh

New Delhi

JournalistI Anchor. Defence|Aviation|Foreign Affairs|Politics. Ex-ABP, TV9, NewsX, Times Now, Zee. Ramnath Goenka Award-17. Flew LCA TEJAS. personal account.

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Articles

Linux Firewalls: Everything You Need to Know About in 2025

1 week ago | ashishnoob.medium.com | Ashish Singh

Whether you’re managing a cloud server or your home lab, understanding Linux firewalls is non-negotiable. In this guide, we’ll break down the two most popular tools — firewalld and iptables — and how you can use them to harden your Linux system like a pro. Modular Design: Customize every component, including the firewall. CLI-Centric: Command-line access gives granular control over security.
Why Every DevOps Engineer Must Learn Linux Networking “(Day 1)”

3 weeks ago | ashishnoob.medium.com | Ashish Singh

Welcome to Day 1 of your 5-Day DevOps Networking Series!If you work in DevOps, cloud engineering, or site reliability, mastering basic networking isn’t just helpful — it’s essential. This guide breaks down the fundamentals of computer networks, key devices, and their roles in modern infrastructure. Before containers, CI/CD pipelines, or Kubernetes, there was networking.
Bash Scripting - Part 8: Arrays and Nested Loops

3 weeks ago | ashishnoob.medium.com | Ashish Singh

The Real Fun Begins — Handling Data and Loops Like a ProBy Ashish SinghWelcome back to the Bash Scripting Series! In Part 8, we’ll explore two powerful and exciting concepts: arrays and nested loops. These tools open the door to handling structured data and performing more advanced logic inside your scripts. Let’s dive in!An array is a collection of values stored in a single variable. Think of it as a list of items, such as filenames, usernames, or numbers.
🌀 Bash Scripting — Part 7: For Loops

1 month ago | ashishnoob.medium.com | Ashish Singh

Mastering Iteration with Ease and Elegance By Ashish SinghWelcome back to the Bash Scripting series! If you’ve been following along, you’re already comfortable with basic scripting concepts. Today, we’ll dive deep into one of the most practical and frequently used constructs in shell scripting: the for loop. In Bash, for loops allow us to iterate over a set of items — such as numbers, files, or command output — and perform actions on each.
Bash Scripting - Part 6: While Loops

1 month ago | ashishnoob.medium.com | Ashish Singh

By Ashish SinghWelcome back to the Bash Scripting Course! In this sixth installment, we dive into one of the most versatile tools in any shell scripter’s toolbox — the while loop. Loops are at the heart of automation, allowing your scripts to perform repetitive tasks until a specific condition is met. Whether you’re monitoring system states, processing files, or managing background tasks, understanding while loops is essential.
Inside Pakistan Military’s ElaborateMisinformation Machinery

1 month ago | sundayguardianlive.com | Ashish Singh

Ashish Singh is an award-winning journalist with 18 years in defence & strategic affairs. NEW DELHI: We have known for a long time that modern warfare will be fought as much on social media as it is on the battlefield. The flooding of social media platforms like X with Pakistani propaganda in the aftermath of the Pahalgam terror attack is one of the most recent examples of this.
From Vision to Value: The Playbook for Building Successful AI Products

2 months ago | ashish24142.medium.com | Ashish Singh

Ashish Singh·Follow5 min read·--In the world of Artificial Intelligence, success isn’t just about fancy algorithms or research papers. It’s about delivering real value — to users, to businesses, and to society. This guide is for builders, strategists, and innovators who want to create AI systems that aren’t just smart — but are useful, ethical, scalable, and loved.
Essential Python Code: Must-Know Interview Questions

2 months ago | medium.com | Ashish Singh

Crucial Python Coding Problems Every Developer Should MasterAshish Singh·FollowPublished inGood Writer·3 min read·--Photo by Markus Spiske on UnsplashI had been preparing for data science jobs as I had to switch my field from mechanical to core data science. Even though I covered some topics like data structures, algorithms, and system design, I covered them all for my confidence. I walked into the interview room with confidence.
Statistics Topics for Data Science Interviews

Mar 27, 2025 | medium.com | Ashish Singh

Member-only storyCrack Your Data Science Interview with These Essential Statistics TopicsAshish Singh·FollowPublished inWrite A Catalyst·4 min read·--Photo by ThisisEngineering on UnsplashMy intense interest in the work of data scientists inspired me to start planning for a future in data science. My studies revealed that excelling in interviews depends on a strong command of statistics. I ensured I was ready by jotting quick notes on key subjects I could call upon later.
Softmax vs. Sigmoid: Activation Function

Mar 23, 2025 | medium.com | Ashish Singh

Member-only storyClearing the Confusion in Machine LearningAshish Singh·FollowPublished inWrite A Catalyst·3 min read·--Photo by Brecht Corbeel on UnsplashSometimes, under pressure in machine learning interviews, especially in fields related to data science and deep learning, basic notions can be obscured. One such usually misused couple is the softmax and sigmoid functions.