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BASH Snippets.

Batch Rename Files with a Pattern

Efficiently rename multiple files based on a pattern using a Bash script, useful for organizing assets or cleaning up project directories in web development workflows.

Gracefully Restart a Web Service

Implement a Bash script to gracefully restart a web service (e.g., Nginx, Apache, or a Node.js process) using systemd, ensuring minimal downtime and proper resource management during deployments.

Automate PostgreSQL Database Backups with Retention

Learn to automate PostgreSQL database backups using bash, incorporating timestamps for versioning and implementing a retention policy to manage old backups efficiently.

Securely Deploy Website Files with Rsync and SSH

Master using rsync over SSH for efficient and secure deployment of website files, including excluding specific directories and verbose output for debugging.

Monitor Server Disk Space and Send Email Alerts

Implement a bash script to monitor server disk space usage, automatically sending an email alert when a predefined threshold is exceeded, preventing potential outages.

Parse Command Line Arguments in Bash with getopts

Discover how to robustly parse command-line options and arguments in bash scripts using `getopts`, supporting both short and long options for flexible script execution.

Interact with REST APIs using cURL and Parse JSON with jq

Learn to make authenticated GET and POST requests to REST APIs using `curl` and effectively parse the JSON responses with `jq` in your bash scripts for automation.

Automate Daily Log Archiving and Cleanup

A Bash script to automatically compress and archive old application logs, then delete files older than a specified duration to manage disk space efficiently.

Analyze Nginx Access Logs for Top IP Addresses

A Bash script to parse Nginx or Apache access logs, extract the source IP addresses, and list the top N most frequent IPs.

Find and Stop a Process by Port Number

A simple Bash script to identify and terminate any process currently listening on a specified TCP port, resolving port conflicts efficiently.

Initial Project Setup with Git Clone and Directory Structure

Quickly set up a new web development project by cloning a Git repository and creating standard subdirectories for assets, config, or logs.

Download and Extract a Remote gzipped Tar Archive

Use Bash to download a gzipped tar archive from a given URL and extract its contents into a specified local target directory.