--- title: "Code Snippets - Reusable Code Examples and Solutions" author: "Mohammad Abu Mattar" canonical: https://mkabumattar.com/codesnippets/page/3 --- Sheet 05 · **Code snippets**Surveyed 2026 # Code Snippets Working code you can lift straight into a project: shell, Python, TypeScript, Terraform. Each snippet says what it does and where it bites. [All Snippets18](/codesnippets)[Cloud1](/codesnippets/categories/cloud)[Aws5](/codesnippets/categories/aws)[Devops9](/codesnippets/categories/devops)[Automation3](/codesnippets/categories/automation)[Shell scripting6](/codesnippets/categories/shell-scripting)[Productivity3](/codesnippets/categories/productivity)[More…](/codesnippets/categories) [Bash and Python1](/codesnippets/bash-and-python)[Python, Node.js and Go1](/codesnippets/python-nodejs-and-go)[SQL and Python1](/codesnippets/sql-and-python)[Bash7](/codesnippets/bash)[Python5](/codesnippets/python)[Typescript3](/codesnippets/typescript) LanguageAllBash (7)Python (5)Typescript (3)Bash and Python (1)Python, Node.js and Go (1)SQL and Python (1)CategoryAllDevops (9)Shell scripting (6)Aws (5)Automation (3)Productivity (3)Python (3)Backend (2)Database (2)Nodejs (2)Performance (2)Ai ml (1)Async (1)Bash (1)Cloud (1)Computer vision (1)Document processing (1)Linux (1)Networking (1)Security (1)Typescript (1)TagAllDevOps (7)Bash (6)Python (6)Shell Scripting (5)Automation (4)AWS (4)NodeJS (4)Performance (4)Configuration (3)TypeScript (3)Backend (2)Boto3 (2)CI/CD (2)Cloud (2)Concurrency (2)DevTools (2)Environment Variables (2)IAM (2)Linux (2)Microservices (2)POSIX (2)Productivity (2)S3 (2)Terminal (2)AI Models (1)Aiohttp (1)Asyncio (1)AWS SDK v3 (1)BestPractices (1)BigData (1)Caching (1)CloudSecurity (1)Computer Vision (1)Cron (1)CRUD (1)Database (1)DataScience (1)Document Processing (1)DocumentClient (1)Dotenv (1)DynamoDB (1)EC2 (1)Echo (1)Exponential Backoff (1)Flock (1)Go (1)HTTP (1)Indexes (1)Infrastructure (1)Locking (1)Machine Learning (1)MemoryOptimization (1)MLOps (1)MultiEnvironment (1)OCR (1)Open Source (1)Optimization (1)Pid file (1)PostgreSQL (1)Printf (1)QueryOptimization (1)Redis (1)Retry (1)Scripting (1)Scripting Best Practices (1)SecretsManagement (1)SecretsManager (1)Security (1)Shell (1)SQL (1)Text Recognition (1)Validation (1)Vault (1)Zod (1)Zsh (1)SortNewest firstOldest firstA to ZShortest read first [![AWS Secrets Manager](/_astro/hero.BIDl4oI2_Z1yJEXf.webp)](/codesnippets/post/nodejs-aws-secrets-manager) ## [AWS Secrets Manager](/codesnippets/post/nodejs-aws-secrets-manager) - [Aws](/codesnippets/categories/aws) - [Devops](/codesnippets/categories/devops) - 18 Jun, 2025 - 03 Mins read Loading secrets in a Node.js app without exposing them If you're still storing API keys or database credentials in .env files or hardcoding them into your codebase, it's time for a better appro [#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) - [Aws](/codesnippets/categories/aws) - [Shell scripting](/codesnippets/categories/shell-scripting) - 11 Jun, 2025 - 02 Mins read 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. The Problem Missing bucket failure [#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) [](/codesnippets/page/2) [1](/codesnippets)[2](/codesnippets/page/2)[3](/codesnippets/page/3) Page 3 of 3 ### [Categories](/codesnippets/categories) - [Cloud1](/codesnippets/categories/cloud) - [Aws5](/codesnippets/categories/aws) - [Devops9](/codesnippets/categories/devops) - [Automation3](/codesnippets/categories/automation) - [Shell scripting6](/codesnippets/categories/shell-scripting) - [Productivity3](/codesnippets/categories/productivity) - [Bash1](/codesnippets/categories/bash) - [Security1](/codesnippets/categories/security) - [Nodejs2](/codesnippets/categories/nodejs) - [Database2](/codesnippets/categories/database) - [Typescript1](/codesnippets/categories/typescript) - [Backend2](/codesnippets/categories/backend) - [Performance2](/codesnippets/categories/performance) - [Linux1](/codesnippets/categories/linux) - [Python3](/codesnippets/categories/python) - [Async1](/codesnippets/categories/async) - [Networking1](/codesnippets/categories/networking) - [Ai ml1](/codesnippets/categories/ai-ml) - [Computer vision1](/codesnippets/categories/computer-vision) - [Document processing1](/codesnippets/categories/document-processing) ### [Tags](/codesnippets/tags) [#Aws4](/codesnippets/tags/aws)[#Ec21](/codesnippets/tags/ec2)[#Boto32](/codesnippets/tags/boto3)[#Python6](/codesnippets/tags/python)[#Devops7](/codesnippets/tags/devops)[#Automation4](/codesnippets/tags/automation)[#Iam2](/codesnippets/tags/iam)[#Cloud2](/codesnippets/tags/cloud)[#Infrastructure1](/codesnippets/tags/infrastructure)[#Bash6](/codesnippets/tags/bash)[#Shell scripting5](/codesnippets/tags/shell-scripting)[#Productivity2](/codesnippets/tags/productivity)[#Devtools2](/codesnippets/tags/devtools)[#Terminal2](/codesnippets/tags/terminal)[#Configuration3](/codesnippets/tags/configuration)[#Retry1](/codesnippets/tags/retry)[#Exponential backoff1](/codesnippets/tags/exponential-backoff)[#Cicd2](/codesnippets/tags/cicd)[#Shell1](/codesnippets/tags/shell)[#S32](/codesnippets/tags/s3)[#Pid file1](/codesnippets/tags/pid-file)[#Locking1](/codesnippets/tags/locking)[#Flock1](/codesnippets/tags/flock)[#Cron1](/codesnippets/tags/cron)[#Concurrency2](/codesnippets/tags/concurrency)[#Linux2](/codesnippets/tags/linux)[#Environment variables2](/codesnippets/tags/environment-variables)[#Posix2](/codesnippets/tags/posix)[#Vault1](/codesnippets/tags/vault)[#Secretsmanagement1](/codesnippets/tags/secretsmanagement)[#Multienvironment1](/codesnippets/tags/multienvironment)[#Security1](/codesnippets/tags/security)[#Nodejs4](/codesnippets/tags/nodejs)[#Typescript3](/codesnippets/tags/typescript)[#Secretsmanager1](/codesnippets/tags/secretsmanager)[#Cloudsecurity1](/codesnippets/tags/cloudsecurity)[#Dynamodb1](/codesnippets/tags/dynamodb)[#Aws sdk v31](/codesnippets/tags/aws-sdk-v3)[#Crud1](/codesnippets/tags/crud)[#Documentclient1](/codesnippets/tags/documentclient)[#Zod1](/codesnippets/tags/zod)[#Validation1](/codesnippets/tags/validation)[#Dotenv1](/codesnippets/tags/dotenv)[#Backend2](/codesnippets/tags/backend)[#Postgresql1](/codesnippets/tags/postgresql)[#Queryoptimization1](/codesnippets/tags/queryoptimization)[#Indexes1](/codesnippets/tags/indexes)[#Performance4](/codesnippets/tags/performance)[#Sql1](/codesnippets/tags/sql)[#Database1](/codesnippets/tags/database)[#Microservices2](/codesnippets/tags/microservices)[#Printf1](/codesnippets/tags/printf)[#Echo1](/codesnippets/tags/echo)[#Scripting best practices1](/codesnippets/tags/scripting-best-practices)[#Aiohttp1](/codesnippets/tags/aiohttp)[#Asyncio1](/codesnippets/tags/asyncio)[#Http1](/codesnippets/tags/http)[#Scripting1](/codesnippets/tags/scripting)[#Memoryoptimization1](/codesnippets/tags/memoryoptimization)[#Datascience1](/codesnippets/tags/datascience)[#Mlops1](/codesnippets/tags/mlops)[#Bigdata1](/codesnippets/tags/bigdata)[#Bestpractices1](/codesnippets/tags/bestpractices)[#Redis1](/codesnippets/tags/redis)[#Caching1](/codesnippets/tags/caching)[#Go1](/codesnippets/tags/go)[#Optimization1](/codesnippets/tags/optimization)[#Ocr1](/codesnippets/tags/ocr)[#Computer vision1](/codesnippets/tags/computer-vision)[#Document processing1](/codesnippets/tags/document-processing)[#Open source1](/codesnippets/tags/open-source)[#Ai models1](/codesnippets/tags/ai-models)[#Machine learning1](/codesnippets/tags/machine-learning)[#Text recognition1](/codesnippets/tags/text-recognition)[#Zsh1](/codesnippets/tags/zsh)