RELEASE_NOTES_v3.0.md

# 🚀 Go CLI Tool v3.0 - Release Notes

## 📅 Release Date: January 24, 2026

## 🎉 Overview

Go CLI Tool v3.0 is a major release featuring a comprehensive command-line interface tool built with Go. This release introduces advanced file operations, enhanced security features, real-time monitoring capabilities, and a complete demo website.

## ✨ New Features

### 🗂️ Advanced File Operations
- **File Search**: Recursively search for text content within files
- **File Statistics**: Detailed file information including size, permissions, and timestamps
- **Enhanced File Management**: Improved copy, move, and list operations with better error handling

### 📝 Text Processing & Cryptography
- **Text Analysis**: Word counting, case conversion, and text reversal
- **Base64 Operations**: Encode and decode text with Base64
- **Cryptographic Hashing**: Secure SHA256 hash generation
- **Password Generation**: Secure password creation with customizable length
- **UUID Generation**: Proper RFC 4122 compliant UUID v4 creation

### 🖥️ System Monitoring Dashboard
- **Real-time Monitoring**: Continuous system metrics display
- **Performance Metrics**: CPU usage, memory statistics, and goroutine counts
- **Live Updates**: Refreshing dashboard with Ctrl+C graceful exit

### 🌐 Web & Network Tools
- **HTTP Client**: Fetch URLs with headers and response inspection
- **DNS Lookup**: Resolve domain names to IP addresses
- **IP Detection**: Local IP address discovery
- **Network Utilities**: Comprehensive network connectivity tools

### 📦 Archive & Media Management
- **ZIP Operations**: Compress and extract archives with directory support
- **Image Processing**: Metadata extraction and PNG conversion
- **JSON Formatting**: Pretty-printing and minification

### 🔧 Unit Conversions & Utilities
- **Temperature Conversion**: Celsius ↔ Fahrenheit
- **Length & Weight**: Meters ↔ Feet, Kilograms ↔ Pounds
- **Data Size**: Bytes ↔ Human readable format (KB, MB, GB, TB)

### 💻 Interactive Mode
- **REPL Shell**: Dynamic command execution with persistent sessions
- **Command History**: Enhanced productivity with shell-like interface

## 🐛 Bug Fixes

### Critical Fixes
- **Compilation Errors**: Fixed duplicate switch cases in main.go
- **Go 1.21 Compatibility**: Updated deprecated `ioutil` functions to modern `os`/`io` packages
- **File Operations**: Migrated `filepath.Walk` to `filepath.WalkDir` for Go 1.21+
- **UUID Format**: Corrected UUID generation to proper RFC 4122 v4 format

### Stability Improvements
- **Error Handling**: Consistent error messages and graceful failure handling
- **Input Validation**: Comprehensive validation for file paths, URLs, and parameters
- **Memory Safety**: Fixed potential memory leaks and resource management issues

## 🔒 Security Enhancements

- **Input Sanitization**: Protection against dangerous file paths and command injection
- **Secure Random Generation**: Cryptographically secure random data generation
- **Parameter Validation**: Length limits and type checking for all inputs
- **Path Traversal Protection**: Prevention of directory traversal attacks

## 🎨 UI/UX Improvements

- **Colorized Output**: ANSI color support with consistent theming
- **Progress Indicators**: Visual feedback for long-running operations
- **Help System**: Comprehensive help text and usage examples
- **Error Messages**: User-friendly error reporting with actionable guidance

## 📚 Documentation & Demo

### Demo Website (`index.html`)
- **Interactive Demo**: Complete web-based demonstration of all features
- **Installation Guide**: Step-by-step setup instructions
- **Feature Showcase**: Detailed examples for each command category
- **Tabbed Interface**: Organized presentation of different tool capabilities

### Test Scripts
- **Windows Testing**: `test-commands.bat` - Automated feature testing
- **Cross-Platform**: `test-commands.sh` - Linux/Mac compatibility
- **Comprehensive Coverage**: Tests all major functionality with clear results

### Documentation
- **README.md**: Complete usage guide with examples
- **Demo Documentation**: Instructions for using the demo website
- **API Reference**: Detailed command-line options and parameters

## 🔧 Technical Improvements

- **Modern Go Practices**: Updated to Go 1.21 standards and best practices
- **Code Organization**: Modular architecture with clear separation of concerns
- **Performance Optimization**: Efficient algorithms and reduced memory usage
- **Cross-Platform Support**: Windows, Linux, and macOS compatibility
- **Build System**: Simplified compilation and deployment process

## 📦 Installation

### Prerequisites
- Go 1.21 or higher
- Git (optional)

### Quick Start
```bash
# Clone repository
git clone https://github.com/rskworld/go-cli-tool.git
cd go-cli-tool

# Build executable
go build -o go-cli-tool main.go

# Run tests
./go-cli-tool help
```

### Demo
```bash
# Open demo website
# Double-click index.html or open in browser

# Run test suite
./test-commands.sh # Linux/Mac
test-commands.bat # Windows
```

## 🎯 Usage Examples

### File Operations
```bash
# Search for text in files
go-cli-tool file -search -query "TODO" -dir ./src

# Get file statistics
go-cli-tool file -stats -name README.md

# Copy files
go-cli-tool file -copy -name source.txt -dest destination.txt
```

### System Monitoring
```bash
# Start monitoring dashboard
go-cli-tool mon
# Press Ctrl+C to exit
```

### Web Tools
```bash
# Fetch URL content
go-cli-tool web -fetch -url https://api.github.com

# DNS lookup
go-cli-tool net -dns google.com
```

### Text Processing
```bash
# Count words
go-cli-tool text -count -input "Hello World"

# Generate password
go-cli-tool rand -pass -len 16

# Hash text
go-cli-tool crypto -hash "secret message"
```

## 🔄 Migration Guide

### From Previous Versions
- **Breaking Changes**: Some command-line flags may have changed
- **Go Version**: Requires Go 1.21+ (previously compatible with older versions)
- **File Paths**: Enhanced validation may affect some edge cases

### Compatibility
- **Operating Systems**: Windows 10+, Linux, macOS
- **Architectures**: x86_64, ARM64
- **Dependencies**: No external dependencies required

## 🤝 Contributing

We welcome contributions! Please see our contributing guidelines for:
- Code style and standards
- Testing requirements
- Pull request process
- Issue reporting

## 📞 Support

- **Documentation**: Comprehensive README and demo website
- **Issues**: GitHub Issues for bug reports and feature requests
- **Email**: support@rskworld.in
- **Website**: https://rskworld.in

## 🙏 Acknowledgments

Special thanks to the Go community and contributors for their valuable input and feedback.

## 📄 License

This project is licensed under the MIT License - see the LICENSE file for details.

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**Author**: RSK World
**Email**: support@rskworld.in
**Website**: https://rskworld.in
**Copyright**: © 2026 RSK World. All rights reserved.