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BASH Snippets.

Automate Daily Backups with Timestamps

Learn to create a bash script for automating daily backups of a directory, incorporating timestamps for unique archives and using tar for compression.

Monitor Directory for New Files and Process

Implement a bash script that continuously monitors a specified directory for new files, processes them, and moves them to an archived location.

Robust Error Handling and Logging

Enhance your bash scripts with robust error handling and logging capabilities, ensuring critical failures are caught and reported clearly.

Find and Delete Old Files for Cleanup

Automate disk space management by creating a bash script to efficiently find and safely delete files older than a specified number of days in a given directory.

Enforce HTTPS with HSTS (HTTP Strict Transport Security) in Nginx

Configure Nginx to enforce HTTP Strict Transport Security (HSTS), forcing browsers to communicate with your website exclusively over secure HTTPS connections.

Implement a Robust Content Security Policy (CSP) for XSS Defense

Configure a Content Security Policy (CSP) HTTP header to mitigate Cross-Site Scripting (XSS) attacks by controlling which resources your web page is allowed to load.

Find and Delete Files Older Than N Days

Automate cleanup of old log files or temporary data. This bash script efficiently finds and removes files modified before a specified number of days, freeing up disk space.

Batch Rename Files with a Prefix/Suffix

Easily rename multiple files in a directory by adding a common prefix or suffix. This bash snippet uses a loop and `mv` to apply a consistent naming convention across many files.

Parse CSV File Line by Line

Process CSV data efficiently in bash. This script reads a CSV file line by line, splitting each record by a delimiter, and allows for custom processing of individual fields.

Monitor and Restart a Linux Service

Keep your services running reliably. This bash script checks the status of a specified systemd service and restarts it if it's found to be inactive or failed, ensuring uptime and stability.

Configure X-Content-Type-Options: nosniff Header to Prevent MIME-Sniffing Attacks

Enhance web security by configuring the `X-Content-Type-Options: nosniff` header in Nginx or Apache, preventing browsers from misinterpreting content types and mitigating XSS risks.

Batch Find and Replace Text in Multiple Files

Learn how to efficiently find and replace specific text strings across multiple files within a directory using a simple Bash script, perfect for configuration updates or quick code refactoring.