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BASH Snippets.

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.

Verify and Install Essential Command-Line Tools

Automate the verification and installation of critical command-line tools required for your development environment, ensuring all dependencies are met for your projects and setups.

Batch Git Pull Across Multiple Repositories

Streamline your workflow by automating the process of pulling the latest changes from multiple Git repositories within a specified root directory, ideal for monorepos or related projects.

Make HTTP Requests with Error Handling using Curl

Learn to perform robust HTTP GET requests using `curl` in Bash, including checking HTTP status codes for success or failure and handling network issues, useful for API health checks and simple integrations.

Automate System Package Updates

A robust Bash script to efficiently update and upgrade system packages on Debian/Ubuntu and RHEL/CentOS distributions, ensuring your servers are up-to-date and secure.

Check and Restart a Linux Service

A robust Bash script to check if a specific systemd service is running and restart it if it's inactive or failed, ensuring service continuity for web applications.

Parse JSON with JQ in Bash

Learn to parse and extract specific data from JSON output using the powerful `jq` command-line JSON processor in your Bash scripts for API integration and data processing.

Synchronize Directories with Rsync

A flexible Bash script for efficient one-way synchronization of files and directories using `rsync`, perfect for deployment of static assets, local backups, or asset management.

Generate Random Alphanumeric String

A simple Bash script to generate a cryptographically strong, random alphanumeric string of a specified length, useful for temporary passwords, API keys, or unique identifiers.