--- title: "devops" author: "Mohammad Abu Mattar" canonical: https://mkabumattar.com/codesnippets/categories/devops --- [All Categories](/codesnippets/categories) 8Snippets # Devops [Home](/)›[All Snippets](/codesnippets)›[All Categories](/codesnippets/categories)›[Devops](/codesnippets/categories/devops) Category # Devops [![Bash Retry Function: Automatically Retry Failing Commands with Exponential Backoff](/_astro/hero.Dap62rVN_Z1q0nar.webp)](/codesnippets/post/bash-retry-function-exponential-backoff) ## [Bash Retry Function: Automatically Retry Failing Commands with Exponential Backoff](/codesnippets/post/bash-retry-function-exponential-backoff) - [Mohammad Abu Mattar](/authors/mohammad-abu-mattar) - [Devops](/codesnippets/categories/devops) - [Shell scripting](/codesnippets/categories/shell-scripting) - [Automation](/codesnippets/categories/automation) - Published: 20 Jul, 2026 Quick Tip Wrap any flaky command in one reusable retry function and stop re-running red pipelines by hand. The Problem The Problem Some commands fail for reasons that have nothing to [#Bash](/codesnippets/tags/bash)[#Retry](/codesnippets/tags/retry)[#Exponential Backoff](/codesnippets/tags/exponential-backoff)+3 tags [Bash](/codesnippets/bash) [View Code](/codesnippets/post/bash-retry-function-exponential-backoff) [![AWS EC2 Instance Management with Boto3: Start, Stop, and Query Instances](/_astro/hero.PnHlvJay_ZkFqWG.webp)](/codesnippets/post/aws-ec2-instance-management-boto3-python) ## [AWS EC2 Instance Management with Boto3: Start, Stop, and Query Instances](/codesnippets/post/aws-ec2-instance-management-boto3-python) - [Mohammad Abu Mattar](/authors/mohammad-abu-mattar) - [Cloud](/codesnippets/categories/cloud) - [Aws](/codesnippets/categories/aws) - [Devops](/codesnippets/categories/devops) - [Automation](/codesnippets/categories/automation) - Published: 14 Apr, 2026 If you've ever spent 20 minutes clicking through the AWS Console just to stop a handful of dev instances, you already know the pain. It's tedious, it doesn't scale, and one wrong click can ruin your a [#AWS](/codesnippets/tags/aws)[#EC2](/codesnippets/tags/ec2)[#Boto3](/codesnippets/tags/boto3)+6 tags [Python](/codesnippets/python) [View Code](/codesnippets/post/aws-ec2-instance-management-boto3-python) [![Multi-Environment Secret Management with HashiCorp Vault](/_astro/hero.B4H3tk7I_1BuPOM.webp)](/codesnippets/post/hashicorp-vault-multi-environment-secrets) ## [Multi-Environment Secret Management with HashiCorp Vault](/codesnippets/post/hashicorp-vault-multi-environment-secrets) - [Mohammad Abu Mattar](/authors/mohammad-abu-mattar) - [Security](/codesnippets/categories/security) - [Devops](/codesnippets/categories/devops) - Published: 03 Mar, 2026 Need to manage secrets safely across multiple environments? Here's how with HashiCorp Vault. Storing secrets in .env files, hardcoding them, or even using separate secret managers per environme [#Vault](/codesnippets/tags/vault)[#SecretsManagement](/codesnippets/tags/secretsmanagement)[#MultiEnvironment](/codesnippets/tags/multienvironment)+3 tags [Bash and Python](/codesnippets/bash-and-python) [View Code](/codesnippets/post/hashicorp-vault-multi-environment-secrets) [![Why printf Beats echo in Linux Scripts](/_astro/hero.Dl3YkIwZ_Z1w9hux.webp)](/codesnippets/post/printf-beats-echo-linux-scripts) ## [Why printf Beats echo in Linux Scripts](/codesnippets/post/printf-beats-echo-linux-scripts) - [Mohammad Abu Mattar](/authors/mohammad-abu-mattar) - [Shell scripting](/codesnippets/categories/shell-scripting) - [Devops](/codesnippets/categories/devops) - [Linux](/codesnippets/categories/linux) - Published: 02 Jan, 2026 Scripting Tip You know that feeling when a script works perfectly on your machine but fails miserably somewhere else? That's probably because you're using echo for output. Let me show you why pri [#Bash](/codesnippets/tags/bash)[#Shell Scripting](/codesnippets/tags/shell-scripting)[#Printf](/codesnippets/tags/printf)+5 tags [Bash](/codesnippets/bash) [View Code](/codesnippets/post/printf-beats-echo-linux-scripts) [![Essential Bash Variables for Every Script](/_astro/hero.B4bDowyY_YQpD7.webp)](/codesnippets/post/essential-bash-variables) ## [Essential Bash Variables for Every Script](/codesnippets/post/essential-bash-variables) - [Mohammad Abu Mattar](/authors/mohammad-abu-mattar) - [Shell scripting](/codesnippets/categories/shell-scripting) - [Devops](/codesnippets/categories/devops) - Published: 26 Dec, 2025 Overview Quick Tip You know what's worse than writing scripts? Writing scripts that break every time you move them to a different machine. Let's fix that with some built-in Bash variables tha [#Bash](/codesnippets/tags/bash)[#Shell Scripting](/codesnippets/tags/shell-scripting)[#Linux](/codesnippets/tags/linux)+4 tags [Bash](/codesnippets/bash) [View Code](/codesnippets/post/essential-bash-variables) [![List S3 Buckets](/_astro/hero.BsiJ6hry_1X9XLn.webp)](/codesnippets/post/python-list-s3-buckets) ## [List S3 Buckets](/codesnippets/post/python-list-s3-buckets) - [Mohammad Abu Mattar](/authors/mohammad-abu-mattar) - [Aws](/codesnippets/categories/aws) - [Python](/codesnippets/categories/python) - [Devops](/codesnippets/categories/devops) - Published: 25 Jun, 2025 Overview Multi-Profile S3 Management Multi-Profile S3 Safari! Ever juggled multiple AWS accounts and needed a quick S3 bucket inventory across all of them? This Python script is your guid [#Python](/codesnippets/tags/python)[#Boto3](/codesnippets/tags/boto3)[#AWS](/codesnippets/tags/aws)+5 tags [Python](/codesnippets/python) [View Code](/codesnippets/post/python-list-s3-buckets) [![AWS Secrets Manager](/_astro/hero.BIDl4oI2_Z1yJEXf.webp)](/codesnippets/post/nodejs-aws-secrets-manager) ## [AWS Secrets Manager](/codesnippets/post/nodejs-aws-secrets-manager) - [Mohammad Abu Mattar](/authors/mohammad-abu-mattar) - [Aws](/codesnippets/categories/aws) - [Devops](/codesnippets/categories/devops) - Published: 18 Jun, 2025 Need to load secrets in your Node.js app without exposing them? Here's how. If you're still storing API keys or database credentials in .env files or hardcoding them into your codebase, it's ti [#NodeJS](/codesnippets/tags/nodejs)[#TypeScript](/codesnippets/tags/typescript)[#AWS](/codesnippets/tags/aws)+3 tags [Typescript](/codesnippets/typescript) [View Code](/codesnippets/post/nodejs-aws-secrets-manager) [![Check S3 Bucket Existence](/_astro/hero.CWiO4GWV_1YUYTb.webp)](/codesnippets/post/bash-s3-bucket-exists) ## [Check S3 Bucket Existence](/codesnippets/post/bash-s3-bucket-exists) - [Mohammad Abu Mattar](/authors/mohammad-abu-mattar) - [Aws](/codesnippets/categories/aws) - [Shell scripting](/codesnippets/categories/shell-scripting) - [Devops](/codesnippets/categories/devops) - Published: 11 Jun, 2025 Quick Tip Don’t let your deployment blow up because of a missing S3 bucket. This Bash script lets you check if a bucket exists before anything fails clean and simple. The Problem Missi [#Bash](/codesnippets/tags/bash)[#AWS](/codesnippets/tags/aws)[#DevOps](/codesnippets/tags/devops)+3 tags [Bash](/codesnippets/bash) [View Code](/codesnippets/post/bash-s3-bucket-exists)