Needle

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

Basic Commands

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

Installation

Linux/Ubuntu

# Package manager installation
sudo apt update
sudo apt install needle

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

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

macOS

# Homebrew installation
brew install needle

# MacPorts installation
sudo port install needle

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

Windows

# Chocolatey installation
choco install needle

# Scoop installation
scoop install needle

# Winget installation
winget install needle

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

Configuration

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

Advanced Operations

File Operations

# Create new file/resource
needle create <name>

# Read file/resource
needle read <name>

# Update existing file/resource
needle update <name>

# Delete file/resource
needle delete <name>

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

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

# List all files/resources
needle list --all

# Search for files/resources
needle search <pattern>

Network Operations

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

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

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

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

# Test connectivity
needle ping <host>

# Scan network range
needle scan <network>

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

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

Process Management

# Start background process
needle start --daemon

# Stop running process
needle stop --force

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

# Check process status
needle status --verbose

# Monitor process performance
needle monitor --metrics

# Kill all processes
needle killall

# Show running processes
needle ps

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

Security Features

Authentication

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

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

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

# Logout current session
needle logout

# Change password
needle passwd

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

# List active sessions
needle sessions

# Revoke session
needle revoke --session <session_id>

Encryption

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

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

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

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

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

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

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

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

Monitoring and Logging

System Monitoring

# Monitor system resources
needle monitor --system

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

# Monitor network activity
needle monitor --network

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

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

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

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

# View monitoring history
needle history --type monitoring

Logging

# View logs
needle logs

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

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

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

# Rotate logs
needle logs --rotate

# Export logs
needle logs --export <file>

# Clear logs
needle logs --clear

# Archive logs
needle logs --archive <archive_file>

Troubleshooting

Common Issues

Issue: Command not found

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

# Check PATH variable
echo $PATH

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

Issue: Permission denied

# Run with elevated privileges
sudo needle <command>

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

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

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

Issue: Configuration errors

# Validate configuration
needle config validate

# Reset to default configuration
needle config reset

# Check configuration file location
needle config show --file

# Backup current configuration
needle config export > backup.conf

# Restore from backup
needle config import backup.conf

Issue: Service not starting

# Check service status
needle status --detailed

# Check system logs
journalctl -u needle

# Start in debug mode
needle start --debug

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

# Kill conflicting processes
needle killall --force

Debug Commands

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

Performance Optimization

Resource Management

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

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

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

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

# Clear cache
needle cache clear

# Show cache statistics
needle cache stats

# Optimize performance
needle optimize --profile <profile>

# Show performance metrics
needle metrics

Parallel Processing

# Enable parallel processing
needle --parallel <command>

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

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

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

Integration

Scripting

#!/bin/bash
# Example script using needle

set -euo pipefail

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

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

    if needle --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"
    needle 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
NEEDLE_CONFIG	Configuration file path	~/.needle/config.yaml
NEEDLE_HOME	Home directory	~/.needle
NEEDLE_LOG_LEVEL	Logging level	INFO
NEEDLE_LOG_FILE	Log file path	~/.needle/logs/needle.log
NEEDLE_CACHE_DIR	Cache directory	~/.needle/cache
NEEDLE_DATA_DIR	Data directory	~/.needle/data
NEEDLE_TIMEOUT	Default timeout	30s
NEEDLE_MAX_WORKERS	Maximum workers	4

Configuration File

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

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

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

Examples

Basic Workflow

# 1. Initialize needle
needle init

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

# 3. Start service
needle start

# 4. Check status
needle status

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

# 6. View results
needle results

# 7. Stop service
needle stop

Advanced Workflow

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

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

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

Automation Example

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

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

done < "$TARGETS_FILE"

# Generate summary report
needle 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

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