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Bash Script Locking: Prevent Concurrent Runs with a PID File

Bash Script Locking: Prevent Concurrent Runs with a PID File

Quick Tip Wrap any script that must not run twice at once in a PID-file lock, and a second copy simply exits instead of corrupting your data. The Problem The Problem Cron does not c

#Bash#Pid file#Locking+3 tags
Bash
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Bash Retry Function: Automatically Retry Failing Commands with Exponential Backoff

Bash Retry Function: Automatically Retry Failing Commands with Exponential Backoff

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#Retry#Exponential Backoff+3 tags
Bash
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AWS EC2 Instance Management with Boto3: Start, Stop, and Query Instances

AWS EC2 Instance Management with Boto3: Start, Stop, and Query Instances

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#EC2#Boto3+6 tags
Python
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Multi-Environment Secret Management with HashiCorp Vault

Multi-Environment Secret Management with HashiCorp Vault

Managing secrets safely across multiple environments with HashiCorp Vault Storing secrets in .env files, hardcoding them, or even using separate secret managers per environment creates security

#Vault#SecretsManagement#MultiEnvironment+3 tags
Bash and Python
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Why printf Beats echo in Linux Scripts

Why printf Beats echo in Linux Scripts

Scripting Tip A script that works on your machine can produce different output on another system. The output command is often the reason. printf behaves the same way across shells, and echo d

#Bash#Shell Scripting#Printf+5 tags
Bash
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Essential Bash Variables for Every Script

Essential Bash Variables for Every Script

Overview Quick Tip You know what's worse than writing scripts? Writing scripts that break every time you move them to a different machine. Built-in Bash variables fix that. The problem wi

#Bash#Shell Scripting#Linux+4 tags
Bash
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List S3 Buckets

List S3 Buckets

Overview Multi-profile S3 management Ever juggled multiple AWS accounts and needed a quick S3 bucket inventory across all of them? This Python script handles it. Use case Perfect for or

#Python#Boto3#AWS+5 tags
Python
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AWS Secrets Manager

AWS Secrets Manager

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#TypeScript#AWS+3 tags
Typescript
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Check S3 Bucket Existence

Check S3 Bucket Existence

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#AWS#DevOps+3 tags
Bash
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