---
title: "Rahulkumar Choudhary (@rahulsblog) | Hashnode"
description: "Freelancer, DevOps Engineer, Developer, Love Kubernetes and Terraform. Read the latest articles by Rahulkumar Choudhary on Hashnode."
url: "https://hashnode.com/@rahulsblog"
---

@rahulsblog

# Rahulkumar Choudhary

@rahulsblog · TX, United States · Joined November 2022

Freelancer, DevOps Engineer, Developer, Love Kubernetes and Terraform

### [Terminal Multiplexing using Tmux - Sessions, Windows, and Panes](https://rahulsblog.hashnode.dev/tmux?utm_source=hashnode&utm_medium=feed)

If you often work in the terminal and keep opening multiple tabs just to manage different tasks, tmux can make your life much easier.

3 min read · [rahulsblog.hashnode.dev](https://rahulsblog.hashnode.dev/tmux?utm_source=hashnode&utm_medium=feed)

[Jan 25](https://hashnode.com/posts/tmux/69765ce8437a551b2e64826f)

### [Securely Access Azure Key Vault Secrets in Azure DevOps CI/CD Pipelines Using Managed Identity and Federated Credentials](https://rahulsblog.hashnode.dev/securely-access-azure-key-vault-secrets-in-azure-devops-cicd-pipelines-using-managed-identity-and-federated-credentials?utm_source=hashnode&utm_medium=feed)

Step-by-step guide to configuring RBAC, service connections, and federated credentials for secret management in Azure DevOps.

7 min read · [rahulsblog.hashnode.dev](https://rahulsblog.hashnode.dev/securely-access-azure-key-vault-secrets-in-azure-devops-cicd-pipelines-using-managed-identity-and-federated-credentials?utm_source=hashnode&utm_medium=feed)

[Sep 14, 2025](https://hashnode.com/posts/securely-access-azure-key-vault-secrets-in-azure-devops-cicd-pipelines-using-managed-identity-and-federated-credentials/68c71a206eb055deb93c537c)

### [Understanding Parent Shell and $$ in Linux](https://rahulsblog.hashnode.dev/understanding-parent-shell-and-in-linux?utm_source=hashnode&utm_medium=feed)

Learn what a parent shell is in Linux, how $$ and $PPID work, and why understanding shell hierarchy matters for scripts and debugging.

3 min read · [rahulsblog.hashnode.dev](https://rahulsblog.hashnode.dev/understanding-parent-shell-and-in-linux?utm_source=hashnode&utm_medium=feed)

[Sep 7, 2025](https://hashnode.com/posts/understanding-parent-shell-and-in-linux/68bce75269a6cb246a8aafb7)

### [Check the ulimit by running the docker file](https://rahulsblog.hashnode.dev/ulimit-docker-file?utm_source=hashnode&utm_medium=feed)

This setup allows you to expose system-level resource limits (rlimit) dynamically via Nginx by leveraging a custom script and FastCGI.

3 min read · [rahulsblog.hashnode.dev](https://rahulsblog.hashnode.dev/ulimit-docker-file?utm_source=hashnode&utm_medium=feed)

[Dec 30, 2024](https://hashnode.com/posts/ulimit-docker-file/6772f502cec770ef0ddd18a7)

### [aws-nuke: nuke all AWS resources in an AWS account with a single click!](https://rahulsblog.hashnode.dev/aws-nuke?utm_source=hashnode&utm_medium=feed)

aws-nuke is a tool that removes all resources from an AWS account.

4 min read · [rahulsblog.hashnode.dev](https://rahulsblog.hashnode.dev/aws-nuke?utm_source=hashnode&utm_medium=feed)

[Jan 16, 2023](https://hashnode.com/posts/aws-nuke/63c57e9e82f87321b33dbcf9)