Linux User & Group Management System 🐧

A powerful, interactive bash script for comprehensive Linux user and group management with database logging and authentication features. Built for system administrators to streamline user lifecycle management operations.

✨ Features

User Management

• 👤 Add User - Create new system users with home directories
• 🗑️ Delete User - Remove users and their home directories
• 🔒 Lock User - Disable user accounts without deletion
• 🔓 Unlock User - Re-enable locked user accounts
• 📊 Show User Details - Display comprehensive user information (UID, GID, groups)
• 🔐 User Authentication - Validate user credentials with password verification

Group Management

• 👥 Add Group - Create new system groups
• 🗑️ Delete Group - Remove existing groups
• ➕ Add User to Group - Assign users to groups
• ➖ Remove User from Group - Revoke group memberships
• 🔄 Grant Cross-Group Access - Enable users to access multiple group resources

Security & Authentication

• 🔑 Password Expiry Check - Validate password expiration status
• 🛡️ User Authentication - Secure login verification before system access
• ⏰ Expiry Alerts - Automatic detection of expired passwords
• 🔐 Input Validation - Sanitize user inputs to prevent injection attacks

Logging & Audit

• 📝 File Logging - All actions logged to usermgmt.log
• 💾 MySQL Database Logging - Persistent audit trail in MySQL database
• ⏱️ Timestamped Entries - Every action recorded with precise timestamps
• 📊 Audit Trail - Complete history of user and group modifications

User Interface

• 🎨 Interactive Dialog Menus - User-friendly TUI (Text User Interface)
• 🖥️ Banner Display - Professional ASCII art banners
• ✅ Input Validation - Real-time validation with error messages
• 🔄 Menu Navigation - Easy-to-use numbered menu system

🛠️ Tech Stack

• Bash Scripting - Core scripting language
• Dialog - Terminal-based UI toolkit
• MySQL - Database for audit logging
• Linux System Commands - useradd, userdel, groupadd, groupdel, usermod, passwd, chage
• Banner - ASCII art text generator

📋 Prerequisites

• Linux operating system (Ubuntu, Debian, CentOS, RHEL, etc.)
• Root or sudo privileges
• MySQL/MariaDB server installed
• Required packages:

  sudo apt-get install dialog mysql-server banner
  # or for RHEL/CentOS
  sudo yum install dialog mariadb-server banner
  
  
  
  

##Screenshota