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BASH Snippets.

Monitoring and Auto-Restarting a Web Service in Bash

Create a bash script to continuously monitor the status of a specific web service and automatically restart it if it's found to be inactive or crashed.

Find and Replace Text Across Multiple Files in Bash

Efficiently find and replace specific text strings across multiple files within a directory and its subdirectories using a powerful bash script with `find` and `sed`.

Downloading Files and Extracting Archives with Bash

Learn to use bash scripts for programmatically downloading files from URLs and automatically extracting common archive formats like .tar.gz or .zip.

Automate Daily Directory Backups with Timestamp

Learn to create a bash script for daily automated backups of critical web project directories, saving them with timestamps for easy recovery and versioning.

Monitor and Restart a Linux Process if Down

Create a robust bash script to continuously monitor a critical Linux process by name and automatically restart it if detected as inactive or crashed.

Find and Replace Text Recursively in Multiple Files

Learn to use a bash script to efficiently find and replace specific text strings across multiple files within a directory and its subdirectories.

Download Multiple Files from a List of URLs

Efficiently download multiple files listed in a text file using a simple bash script, perfect for bulk asset retrieval or data synchronization tasks.

Parse and Extract Data from Log Files using Regex

Utilize a bash script to parse log files, extracting specific data patterns like IP addresses, timestamps, or error codes using regular expressions with `grep` and `awk`.

Monitor Web Server Error Logs in Real-time

A bash script to continuously monitor Apache or Nginx error logs, displaying new error entries as they occur. Essential for quick identification and debugging of issues on a live web server.

Set Up New Web Project Directory with Correct Permissions

Automate the creation of a new web project directory, ensuring proper ownership and read/write permissions for web server access and secure development workflows.

Check Server Disk Space and Alert if Low

A bash script to monitor available disk space on a server. It checks all mounted filesystems and alerts if usage exceeds a configurable threshold, preventing outages from full disks.

Extract Unique Domain Names from a List of URLs

A powerful bash one-liner to parse a file containing URLs and extract only the unique domain names. Ideal for analyzing web server access logs, link lists, or creating whitelists/blacklists.