R2

📋 Copy All Commands 📄 Generate PDF

Comprehensive r2 commands and workflows for system administration across all platforms.

Basic Commands

Command	Description
r2 --version	Show r2 version
r2 --help	Display help information
r2 init	Initialize r2 in current directory
r2 status	Check current status
r2 list	List available options
r2 info	Display system information
r2 config	Show configuration settings
r2 update	Update to latest version
r2 start	Start r2 service
r2 stop	Stop r2 service
r2 restart	Restart r2 service
r2 reload	Reload configuration

Installation

Linux/Ubuntu

# Package manager installation
sudo apt update
sudo apt install r2

# Alternative installation
wget https://github.com/example/r2/releases/latest/download/r2-linux
chmod +x r2-linux
sudo mv r2-linux /usr/local/bin/r2

# Build from source
git clone https://github.com/example/r2.git
cd r2
make && sudo make install

macOS

# Homebrew installation
brew install r2

# MacPorts installation
sudo port install r2

# Manual installation
curl -L -o r2 https://github.com/example/r2/releases/latest/download/r2-macos
chmod +x r2
sudo mv r2 /usr/local/bin/

Windows

# Chocolatey installation
choco install r2

# Scoop installation
scoop install r2

# Winget installation
winget install r2

# Manual installation
# Download from https://github.com/example/r2/releases
# Extract and add to PATH

Configuration

Command	Description
r2 config show	Display current configuration
r2 config list	List all configuration options
r2 config set <key> <value>	Set configuration value
r2 config get <key>	Get configuration value
r2 config unset <key>	Remove configuration value
r2 config reset	Reset to default configuration
r2 config validate	Validate configuration file
r2 config export	Export configuration to file

Advanced Operations

File Operations

# Create new file/resource
r2 create <name>

# Read file/resource
r2 read <name>

# Update existing file/resource
r2 update <name>

# Delete file/resource
r2 delete <name>

# Copy file/resource
r2 copy <source> <destination>

# Move file/resource
r2 move <source> <destination>

# List all files/resources
r2 list --all

# Search for files/resources
r2 search <pattern>

Network Operations

# Connect to remote host
r2 connect <host>:<port>

# Listen on specific port
r2 listen --port <port>

# Send data to target
r2 send --target <host> --data "<data>"

# Receive data from source
r2 receive --source <host>

# Test connectivity
r2 ping <host>

# Scan network range
r2 scan <network>

# Monitor network traffic
r2 monitor --interface <interface>

# Proxy connections
r2 proxy --listen <port> --target <host>:<port>

Process Management

# Start background process
r2 start --daemon

# Stop running process
r2 stop --force

# Restart with new configuration
r2 restart --config <file>

# Check process status
r2 status --verbose

# Monitor process performance
r2 monitor --metrics

# Kill all processes
r2 killall

# Show running processes
r2 ps

# Manage process priority
r2 priority --pid <pid> --level <level>

Security Features

Authentication

# Login with username/password
r2 login --user <username>

# Login with API key
r2 login --api-key <key>

# Login with certificate
r2 login --cert <cert_file>

# Logout current session
r2 logout

# Change password
r2 passwd

# Generate new API key
r2 generate-key --name <key_name>

# List active sessions
r2 sessions

# Revoke session
r2 revoke --session <session_id>

Encryption

# Encrypt file
r2 encrypt --input <file> --output <encrypted_file>

# Decrypt file
r2 decrypt --input <encrypted_file> --output <file>

# Generate encryption key
r2 keygen --type <type> --size <size>

# Sign file
r2 sign --input <file> --key <private_key>

# Verify signature
r2 verify --input <file> --signature <sig_file>

# Hash file
r2 hash --algorithm <algo> --input <file>

# Generate certificate
r2 cert generate --name <name> --days <days>

# Verify certificate
r2 cert verify --cert <cert_file>

Monitoring and Logging

System Monitoring

# Monitor system resources
r2 monitor --system

# Monitor specific process
r2 monitor --pid <pid>

# Monitor network activity
r2 monitor --network

# Monitor file changes
r2 monitor --files <directory>

# Real-time monitoring
r2 monitor --real-time --interval 1

# Generate monitoring report
r2 report --type monitoring --output <file>

# Set monitoring alerts
r2 alert --threshold <value> --action <action>

# View monitoring history
r2 history --type monitoring

Logging

# View logs
r2 logs

# View logs with filter
r2 logs --filter <pattern>

# Follow logs in real-time
r2 logs --follow

# Set log level
r2 logs --level <level>

# Rotate logs
r2 logs --rotate

# Export logs
r2 logs --export <file>

# Clear logs
r2 logs --clear

# Archive logs
r2 logs --archive <archive_file>

Troubleshooting

Common Issues

Issue: Command not found

# Check if r2 is installed
which r2
r2 --version

# Check PATH variable
echo $PATH

# Reinstall if necessary
sudo apt reinstall r2
# or
brew reinstall r2

Issue: Permission denied

# Run with elevated privileges
sudo r2 <command>

# Check file permissions
ls -la $(which r2)

# Fix permissions
chmod +x /usr/local/bin/r2

# Check ownership
sudo chown $USER:$USER /usr/local/bin/r2

Issue: Configuration errors

# Validate configuration
r2 config validate

# Reset to default configuration
r2 config reset

# Check configuration file location
r2 config show --file

# Backup current configuration
r2 config export > backup.conf

# Restore from backup
r2 config import backup.conf

Issue: Service not starting

# Check service status
r2 status --detailed

# Check system logs
journalctl -u r2

# Start in debug mode
r2 start --debug

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

# Kill conflicting processes
r2 killall --force

Debug Commands

Command	Description
r2 --debug	Enable debug output
r2 --verbose	Enable verbose logging
r2 --trace	Enable trace logging
r2 test	Run built-in tests
r2 doctor	Run system health check
r2 diagnose	Generate diagnostic report
r2 benchmark	Run performance benchmarks
r2 validate	Validate installation and configuration

Performance Optimization

Resource Management

# Set memory limit
r2 --max-memory 1G <command>

# Set CPU limit
r2 --max-cpu 2 <command>

# Enable caching
r2 --cache-enabled <command>

# Set cache size
r2 --cache-size 100M <command>

# Clear cache
r2 cache clear

# Show cache statistics
r2 cache stats

# Optimize performance
r2 optimize --profile <profile>

# Show performance metrics
r2 metrics

Parallel Processing

# Enable parallel processing
r2 --parallel <command>

# Set number of workers
r2 --workers 4 <command>

# Process in batches
r2 --batch-size 100 <command>

# Queue management
r2 queue add <item>
r2 queue process
r2 queue status
r2 queue clear

Integration

Scripting

#!/bin/bash
# Example script using r2

set -euo pipefail

# Configuration
CONFIG_FILE="config.yaml"
LOG_FILE="r2.log"

# Check if r2 is available
if ! command -v r2 &> /dev/null; then
    echo "Error: r2 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 r2 operation"

    if r2 --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"
    r2 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
R2_CONFIG	Configuration file path	~/.r2/config.yaml
R2_HOME	Home directory	~/.r2
R2_LOG_LEVEL	Logging level	INFO
R2_LOG_FILE	Log file path	~/.r2/logs/r2.log
R2_CACHE_DIR	Cache directory	~/.r2/cache
R2_DATA_DIR	Data directory	~/.r2/data
R2_TIMEOUT	Default timeout	30s
R2_MAX_WORKERS	Maximum workers	4

Configuration File

# ~/.r2/config.yaml
version: "1.0"

# General settings
settings:
  debug: false
  verbose: false
  log_level: "INFO"
  log_file: "~/.r2/logs/r2.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: "~/.r2/cache"
  max_memory: "1G"

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

Examples

Basic Workflow

# 1. Initialize r2
r2 init

# 2. Configure basic settings
r2 config set host example.com
r2 config set port 8080

# 3. Start service
r2 start

# 4. Check status
r2 status

# 5. Perform operations
r2 run --target example.com

# 6. View results
r2 results

# 7. Stop service
r2 stop

Advanced Workflow

# Comprehensive operation with monitoring
r2 run \
  --config production.yaml \
  --parallel \
  --workers 8 \
  --verbose \
  --timeout 300 \
  --output json \
  --log-file operation.log

# Monitor in real-time
r2 monitor --real-time --interval 5

# Generate report
r2 report --type comprehensive --output report.html

Automation Example

#!/bin/bash
# Automated r2 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..."

    r2 \
        --config "$CONFIG_FILE" \
        --output json \
        --output-file "$RESULTS_DIR/$\\\\{target\\\\}.json" \
        run "$target"

done < "$TARGETS_FILE"

# Generate summary report
r2 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

• Official Website
• Documentation
• API Reference
• Installation Guide
• Configuration Reference

Community Resources

• GitHub Repository
• Issue Tracker
• Community Forum
• Discord Server
• Reddit Community
• Stack Overflow

Learning Resources

• Getting Started Guide
• Tutorial Series
• Best Practices Guide
• Video Tutorials
• Training Courses
• Certification Program

Related Tools

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

---

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