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React

Comprehensive react commands and workflows for system administration across all platforms.

Basic Commands

Command Description
react --version Show react version
react --help Display help information
react init Initialize react in current directory
react status Check current status
react list List available options
react info Display system information
react config Show configuration settings
react update Update to latest version
react start Start react service
react stop Stop react service
react restart Restart react service
react reload Reload configuration

Installation

Linux/Ubuntu

# Package manager installation
sudo apt update
sudo apt install react

# Alternative installation
wget https://github.com/example/react/releases/latest/download/react-linux
chmod +x react-linux
sudo mv react-linux /usr/local/bin/react

# Build from source
git clone https://github.com/example/react.git
cd react
make && sudo make install

macOS

# Homebrew installation
brew install react

# MacPorts installation
sudo port install react

# Manual installation
curl -L -o react https://github.com/example/react/releases/latest/download/react-macos
chmod +x react
sudo mv react /usr/local/bin/

Windows

# Chocolatey installation
choco install react

# Scoop installation
scoop install react

# Winget installation
winget install react

# Manual installation
# Download from https://github.com/example/react/releases
# Extract and add to PATH

Configuration

Command Description
react config show Display current configuration
react config list List all configuration options
react config set <key> <value> Set configuration value
react config get <key> Get configuration value
react config unset <key> Remove configuration value
react config reset Reset to default configuration
react config validate Validate configuration file
react config export Export configuration to file

Advanced Operations

File Operations

# Create new file/resource
react create <name>

# Read file/resource
react read <name>

# Update existing file/resource
react update <name>

# Delete file/resource
react delete <name>

# Copy file/resource
react copy <source> <destination>

# Move file/resource
react move <source> <destination>

# List all files/resources
react list --all

# Search for files/resources
react search <pattern>

Network Operations

# Connect to remote host
react connect <host>:<port>

# Listen on specific port
react listen --port <port>

# Send data to target
react send --target <host> --data "<data>"

# Receive data from source
react receive --source <host>

# Test connectivity
react ping <host>

# Scan network range
react scan <network>

# Monitor network traffic
react monitor --interface <interface>

# Proxy connections
react proxy --listen <port> --target <host>:<port>

Process Management

# Start background process
react start --daemon

# Stop running process
react stop --force

# Restart with new configuration
react restart --config <file>

# Check process status
react status --verbose

# Monitor process performance
react monitor --metrics

# Kill all processes
react killall

# Show running processes
react ps

# Manage process priority
react priority --pid <pid> --level <level>

Security Features

Authentication

# Login with username/password
react login --user <username>

# Login with API key
react login --api-key <key>

# Login with certificate
react login --cert <cert_file>

# Logout current session
react logout

# Change password
react passwd

# Generate new API key
react generate-key --name <key_name>

# List active sessions
react sessions

# Revoke session
react revoke --session <session_id>

Encryption

# Encrypt file
react encrypt --input <file> --output <encrypted_file>

# Decrypt file
react decrypt --input <encrypted_file> --output <file>

# Generate encryption key
react keygen --type <type> --size <size>

# Sign file
react sign --input <file> --key <private_key>

# Verify signature
react verify --input <file> --signature <sig_file>

# Hash file
react hash --algorithm <algo> --input <file>

# Generate certificate
react cert generate --name <name> --days <days>

# Verify certificate
react cert verify --cert <cert_file>

Monitoring and Logging

System Monitoring

# Monitor system resources
react monitor --system

# Monitor specific process
react monitor --pid <pid>

# Monitor network activity
react monitor --network

# Monitor file changes
react monitor --files <directory>

# Real-time monitoring
react monitor --real-time --interval 1

# Generate monitoring report
react report --type monitoring --output <file>

# Set monitoring alerts
react alert --threshold <value> --action <action>

# View monitoring history
react history --type monitoring

Logging

# View logs
react logs

# View logs with filter
react logs --filter <pattern>

# Follow logs in real-time
react logs --follow

# Set log level
react logs --level <level>

# Rotate logs
react logs --rotate

# Export logs
react logs --export <file>

# Clear logs
react logs --clear

# Archive logs
react logs --archive <archive_file>

Troubleshooting

Common Issues

Issue: Command not found

# Check if react is installed
which react
react --version

# Check PATH variable
echo $PATH

# Reinstall if necessary
sudo apt reinstall react
# or
brew reinstall react

Issue: Permission denied

# Run with elevated privileges
sudo react <command>

# Check file permissions
ls -la $(which react)

# Fix permissions
chmod +x /usr/local/bin/react

# Check ownership
sudo chown $USER:$USER /usr/local/bin/react

Issue: Configuration errors

# Validate configuration
react config validate

# Reset to default configuration
react config reset

# Check configuration file location
react config show --file

# Backup current configuration
react config export > backup.conf

# Restore from backup
react config import backup.conf

Issue: Service not starting

# Check service status
react status --detailed

# Check system logs
journalctl -u react

# Start in debug mode
react start --debug

# Check port availability
netstat -tulpn|grep <port>

# Kill conflicting processes
react killall --force

Debug Commands

Command Description
react --debug Enable debug output
react --verbose Enable verbose logging
react --trace Enable trace logging
react test Run built-in tests
react doctor Run system health check
react diagnose Generate diagnostic report
react benchmark Run performance benchmarks
react validate Validate installation and configuration

Performance Optimization

Resource Management

# Set memory limit
react --max-memory 1G <command>

# Set CPU limit
react --max-cpu 2 <command>

# Enable caching
react --cache-enabled <command>

# Set cache size
react --cache-size 100M <command>

# Clear cache
react cache clear

# Show cache statistics
react cache stats

# Optimize performance
react optimize --profile <profile>

# Show performance metrics
react metrics

Parallel Processing

# Enable parallel processing
react --parallel <command>

# Set number of workers
react --workers 4 <command>

# Process in batches
react --batch-size 100 <command>

# Queue management
react queue add <item>
react queue process
react queue status
react queue clear

Integration

Scripting

#!/bin/bash
# Example script using react

set -euo pipefail

# Configuration
CONFIG_FILE="config.yaml"
LOG_FILE="react.log"

# Check if react is available
if ! command -v react &> /dev/null; then
    echo "Error: react is not installed" >&2
    exit 1
fi

# Function to log messages
log() \\\\{
    echo "$(date '+%Y-%m-%d %H:%M:%S') - $1"|tee -a "$LOG_FILE"
\\\\}

# Main operation
main() \\\\{
    log "Starting react operation"

    if react --config "$CONFIG_FILE" run; then
        log "Operation completed successfully"
        exit 0
    else
        log "Operation failed with exit code $?"
        exit 1
    fi
\\\\}

# Cleanup function
cleanup() \\\\{
    log "Cleaning up"
    react cleanup
\\\\}

# Set trap for cleanup
trap cleanup EXIT

# Run main function
main "$@"

API Integration

#!/usr/bin/env python3
"""
Python wrapper for the tool
"""

import subprocess
import json
import logging
from pathlib import Path
from typing import Dict, List, Optional

class ToolWrapper:
    def __init__(self, config_file: Optional[str] = None):
        self.config_file = config_file
        self.logger = logging.getLogger(__name__)

    def run_command(self, args: List[str]) -> Dict:
        """Run command and return parsed output"""
        cmd = ['tool_name']

        if self.config_file:
            cmd.extend(['--config', self.config_file])

        cmd.extend(args)

        try:
            result = subprocess.run(
                cmd,
                capture_output=True,
                text=True,
                check=True
            )
            return \\\\{'stdout': result.stdout, 'stderr': result.stderr\\\\}
        except subprocess.CalledProcessError as e:
            self.logger.error(f"Command failed: \\\\{e\\\\}")
            raise

    def status(self) -> Dict:
        """Get current status"""
        return self.run_command(['status'])

    def start(self) -> Dict:
        """Start service"""
        return self.run_command(['start'])

    def stop(self) -> Dict:
        """Stop service"""
        return self.run_command(['stop'])

# Example usage
if __name__ == "__main__":
    wrapper = ToolWrapper()
    status = wrapper.status()
    print(json.dumps(status, indent=2))

Environment Variables

Variable Description Default
REACT_CONFIG Configuration file path ~/.react/config.yaml
REACT_HOME Home directory ~/.react
REACT_LOG_LEVEL Logging level INFO
REACT_LOG_FILE Log file path ~/.react/logs/react.log
REACT_CACHE_DIR Cache directory ~/.react/cache
REACT_DATA_DIR Data directory ~/.react/data
REACT_TIMEOUT Default timeout 30s
REACT_MAX_WORKERS Maximum workers 4

Configuration File

# ~/.react/config.yaml
version: "1.0"

# General settings
settings:
  debug: false
  verbose: false
  log_level: "INFO"
  log_file: "~/.react/logs/react.log"
  timeout: 30
  max_workers: 4

# Network configuration
network:
  host: "localhost"
  port: 8080
  ssl: true
  timeout: 30
  retries: 3

# Security settings
security:
  auth_required: true
  api_key: ""
  encryption: "AES256"
  verify_ssl: true

# Performance settings
performance:
  cache_enabled: true
  cache_size: "100M"
  cache_dir: "~/.react/cache"
  max_memory: "1G"

# Monitoring settings
monitoring:
  enabled: true
  interval: 60
  metrics_enabled: true
  alerts_enabled: true

Examples

Basic Workflow

# 1. Initialize react
react init

# 2. Configure basic settings
react config set host example.com
react config set port 8080

# 3. Start service
react start

# 4. Check status
react status

# 5. Perform operations
react run --target example.com

# 6. View results
react results

# 7. Stop service
react stop

Advanced Workflow

# Comprehensive operation with monitoring
react run \
  --config production.yaml \
  --parallel \
  --workers 8 \
  --verbose \
  --timeout 300 \
  --output json \
  --log-file operation.log

# Monitor in real-time
react monitor --real-time --interval 5

# Generate report
react report --type comprehensive --output report.html

Automation Example

#!/bin/bash
# Automated react workflow

# Configuration
TARGETS_FILE="targets.txt"
RESULTS_DIR="results/$(date +%Y-%m-%d)"
CONFIG_FILE="automation.yaml"

# Create results directory
mkdir -p "$RESULTS_DIR"

# Process each target
while IFS= read -r target; do
    echo "Processing $target..."

    react \
        --config "$CONFIG_FILE" \
        --output json \
        --output-file "$RESULTS_DIR/$\\\\{target\\\\}.json" \
        run "$target"

done < "$TARGETS_FILE"

# Generate summary report
react report summary \
    --input "$RESULTS_DIR/*.json" \
    --output "$RESULTS_DIR/summary.html"

Best Practices

Security

  • Always verify checksums when downloading binaries
  • Use strong authentication methods (API keys, certificates)
  • Regularly update to the latest version
  • Follow principle of least privilege
  • Enable audit logging for compliance
  • Use encrypted connections when possible
  • Validate all inputs and configurations
  • Implement proper access controls

Performance

  • Use appropriate resource limits for your environment
  • Monitor system performance regularly
  • Optimize configuration for your use case
  • Use parallel processing when beneficial
  • Implement proper caching strategies
  • Regular maintenance and cleanup
  • Profile performance bottlenecks
  • Use efficient algorithms and data structures

Operational

  • Maintain comprehensive documentation
  • Implement proper backup strategies
  • Use version control for configurations
  • Monitor and alert on critical metrics
  • Implement proper error handling
  • Use automation for repetitive tasks
  • Regular security audits and updates
  • Plan for disaster recovery

Development

  • Follow coding standards and conventions
  • Write comprehensive tests
  • Use continuous integration/deployment
  • Implement proper logging and monitoring
  • Document APIs and interfaces
  • Use version control effectively
  • Review code regularly
  • Maintain backward compatibility

Resources

Official Documentation

Community Resources

Learning Resources

  • Git - Complementary functionality
  • Docker - Alternative solution
  • Kubernetes - Integration partner

Last updated: 2025-07-06|Edit on GitHub