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🛠️ Admin Automation Toolkit: Bash CLI Scripts for Linux System Management

A professional-grade toolkit for Linux system administrators, featuring robust Bash CLI scripts to automate core user management, system maintenance, backups, updates, firewall management, and system monitoring.

📋 Overview

This toolkit demonstrates real-world Linux system administration tasks automated through modular, production-ready Bash scripting — with error handling, help menus, colorful outputs, and logging included.

Each script is designed for operational efficiency, clean terminal UX, and secure system management practices.

🚀 Scripts Included

Script Purpose
create_user.sh Add a new user, set initial password, and force password change on first login
remove_user.sh Safely delete a user and archive their home directory
backup_system.sh Create compressed full system backups with timestamps
update_and_patch.sh Fully update and upgrade the system with logging
log_cleaner.sh Rotate and archive old system logs automatically
show_system_info.sh Display system uptime, CPU load, disk usage, and memory usage
firewall_manager.sh Open or close firewall ports easily (optional bonus script)

✨ Key Features

  • Professional CLI design with banners and colorful output
  • Full --help menus for every script
  • Graceful error handling
  • Real-time system and user lifecycle management
  • Logging of critical operations
  • Timestamped backups and archival
  • Firewall port management
  • Modular and clean Bash scripting
  • Linux-friendly and production-grade

📂 Folder Structure

bash-admin-toolkit/
├── scripts/
│   ├── create_user.sh
│   ├── remove_user.sh
│   ├── backup_system.sh
│   ├── update_and_patch.sh
│   ├── log_cleaner.sh
│   ├── show_system_info.sh
│   ├── firewall_manager.sh
├── demos/
│   ├── create_user_demo.gif
│   ├── backup_demo.gif
│   ├── patch_demo.gif
│   ├── log_cleaner_demo.gif
│   ├── show_system_info_demo.gif
│   ├── firewall_manager_demo.gif
├── README.md

📸 Demos

Script Demo
Create User Create User Demo
System Backup Backup Demo
System Update & Patch Patch Demo
Log Cleaner Log Cleaner Demo
Show System Info System Info Demo
Firewall Manager Firewall Manager Demo

🧐 Example Usage

# Create a new user
sudo ./scripts/create_user.sh -u devops_admin -p Welcome123!

# Remove a user safely
sudo ./scripts/remove_user.sh -u olduser

# Backup critical system folders
sudo ./scripts/backup_system.sh

# Update and patch the system
sudo ./scripts/update_and_patch.sh

# Clean up old logs
sudo ./scripts/log_cleaner.sh

# Show system stats
./scripts/show_system_info.sh

# Open firewall port 443
sudo ./scripts/firewall_manager.sh --open 443

📜 Requirements

  • Bash 4.0+
  • Linux OS (Debian/Ubuntu preferred)
  • Root permissions for most scripts
  • ufw installed for firewall management (optional)

📈 What I Learned

  • Real-world automation of Linux system administration tasks
  • Writing modular, maintainable Bash scripts
  • Building user-friendly CLI interfaces
  • Managing Linux system users, backups, logs, firewalls
  • Logging operational tasks securely

⚡ How to Run Locally

  1. Clone this repo: 
    git clone https://github.com/your-username/bash-admin-toolkit.git
  2. Move into the project: 
    cd bash-admin-toolkit
  3. (On Linux) Make all scripts executable: 
    chmod +x scripts/*.sh
  4. Run any script (most require sudo): 
    sudo ./scripts/create_user.sh --help

🌟 Future Improvements

  • Add an interactive menu-based launcher script
  • Add system health checks before backups
  • Extend support to CentOS/RHEL systems (yum, dnf)
  • Build a web dashboard to manage scripts remotely

💪 This project proves the ability to design, automate, and maintain core Linux administration workflows through modular Bash scripting, improving operational efficiency, system reliability, and security.