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BASH Snippets.

Create Timestamped Backups of Files and Directories

Learn to create reliable timestamped backups of your important files and directories using Bash with `tar` and `gzip` for easy recovery.

Automate Git Clone and Node.js Dependency Installation

Streamline web project setup. This bash script automates cloning a Git repository and installing Node.js dependencies with npm or yarn, simplifying initial project setup for developers.

Generate Random Alphanumeric String for Passwords or Keys

Create secure, random alphanumeric strings with a specified length using '/dev/urandom' and 'tr'. Ideal for temporary passwords, API keys, or unique identifiers in scripts.

Monitor and Restart a Systemd Service

Ensure critical web services remain active. This bash script checks if a specified systemd service is running and restarts it if it's found to be inactive or in a failed state.

Basic Log File Archiving

Perform simple rotation for application log files. This script archives old log files by compressing and renaming them with a timestamp, then truncates the original log file for fresh logging.

Find and Delete Old Files in a Directory

Reclaim valuable disk space by automatically locating and removing files older than a specified number of days in a target directory. Useful for cleaning up temporary files or old backups.

Robust Bash Script Error Handling and Cleanup

Enhance Bash script reliability using 'set -e' for immediate exits on error and 'trap' for guaranteed resource cleanup, critical for stable deployment or build processes.

Parsing Command-Line Arguments with Getopts

Learn to parse command-line options and arguments efficiently in Bash scripts using 'getopts', enabling flexible configuration for your automated tasks.

Robust File Download with Curl and Retries

Master downloading files in Bash using 'curl', featuring progress, error handling, retries, and timeouts for resilient asset fetching in web development workflows.

Batch Processing Files in a Directory with Case Statements

Automate batch operations on files in Bash using 'for' loops and 'case' statements, enabling efficient processing based on file types for web assets or data.

Executing Multiple Commands in Parallel for Speedup

Accelerate Bash scripts by running multiple independent commands concurrently using job control, ideal for speeding up build processes or fetching data in web development.

Automated Web App Deployment with Git Pull

Automate web application deployments using a simple Bash script that pulls the latest code from Git, installs dependencies, and restarts services.