Qualys

Comprehensive qualys commands and usage patterns for efficient workflow management.

Overview

Qualys is a powerful tool for various operations and system management. This cheat sheet covers essential commands, configuration options, and best practices.

Installation

Linux/Ubuntu

# Package manager installation
sudo apt update
sudo apt install qualys

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

macOS

# Homebrew installation
brew install qualys

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

Windows

# Chocolatey installation
choco install qualys

# Scoop installation
scoop install qualys

# Manual installation
# Download from official website and add to PATH

Basic Commands

Command	Description
`qualys --help`	Display help information
`qualys --version`	Show version information
`qualys init`	Initialize qualys in current directory
`qualys status`	Check current status
`qualys list`	List available options
`qualys info`	Display system information
`qualys config`	Show configuration
`qualys update`	Update to latest version

Essential Operations

Getting Started

# Initialize qualys
qualys init

# Basic usage
qualys run

# With verbose output
qualys --verbose run

# With configuration file
qualys --config config.yaml run

Configuration

# View configuration
qualys config show

# Set configuration option
qualys config set key value

# Get configuration value
qualys config get key

# Reset configuration
qualys config reset

Advanced Operations

# Debug mode
qualys --debug run

# Dry run (preview changes)
qualys --dry-run run

# Force operation
qualys --force run

# Parallel execution
qualys --parallel run

File Operations

Command	Description
`qualys create <file>`	Create new file
`qualys read <file>`	Read file contents
`qualys update <file>`	Update existing file
`qualys delete <file>`	Delete file
`qualys copy <src> <dst>`	Copy file
`qualys move <src> <dst>`	Move file

Network Operations

# Connect to remote host
qualys connect host:port

# Listen on port
qualys listen --port 8080

# Send data
qualys send --data "message" --target host

# Receive data
qualys receive --port 8080

Security Features

Authentication

# Login with credentials
qualys login --user username

# Logout
qualys logout

# Change password
qualys passwd

# Generate API key
qualys generate-key

Encryption

# Encrypt file
qualys encrypt file.txt

# Decrypt file
qualys decrypt file.txt.enc

# Generate certificate
qualys cert generate

# Verify signature
qualys verify file.sig

Troubleshooting

Common Issues

Issue: Command not found

# Check if installed
which qualys

# Reinstall if necessary
sudo apt reinstall qualys

Issue: Permission denied

# Run with sudo
sudo qualys command

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

Issue: Configuration errors

# Reset configuration
qualys config reset

# Validate configuration
qualys config validate

Debug Commands

Command	Description
`qualys --debug`	Enable debug output
`qualys --verbose`	Verbose logging
`qualys test`	Run self-tests
`qualys doctor`	Check system health

Best Practices

Security

Always verify checksums when downloading
Use strong authentication methods
Regularly update to latest version
Follow principle of least privilege

Performance

Use appropriate buffer sizes
Monitor resource usage
Optimize configuration for your use case
Regular maintenance and cleanup

Maintenance

# Update qualys
qualys update

# Clean temporary files
qualys clean

# Backup configuration
qualys backup --config

# Restore from backup
qualys restore --config backup.yaml

Integration

Scripting

#!/bin/bash
# Example script using qualys

if ! command -v qualys &> /dev/null; then
    echo "qualys is not installed"
    exit 1
fi

if qualys run; then
    echo "Success"
else
    echo "Failed"
    exit 1
fi

API Integration

import subprocess
import json

def run_qualys(command):
    try:
        result = subprocess.run(['qualys'] + command.split(),
                              capture_output=True, text=True)
        return result.stdout
    except Exception as e:
        print(f"Error: \\\\{e\\\\}")
        return None

Environment Variables

Variable	Description	Default
`QUALYS_CONFIG`	Configuration file path	`~/.qualys/config`
`QUALYS_HOME`	Home directory	`~/.qualys`
`QUALYS_LOG_LEVEL`	Logging level	`INFO`
`QUALYS_TIMEOUT`	Operation timeout	`30s`

Configuration File

# ~/.qualys/config.yaml
version: "1.0"
settings:
  debug: false
  timeout: 30
  log_level: "INFO"

network:
  host: "localhost"
  port: 8080
  ssl: true

security:
  auth_required: true
  encryption: "AES256"

Examples

Basic Workflow

# 1. Initialize
qualys init

# 2. Configure
qualys config set host example.com

# 3. Run operation
qualys run

# 4. Check results
qualys status

# 5. Cleanup
qualys clean

Advanced Workflow

# Comprehensive operation
qualys run \
  --config production.yaml \
  --parallel \
  --verbose \
  --timeout 300

# Monitoring
qualys monitor \
  --interval 60 \
  --alert-threshold 80

Resources

Official Documentation

Community

Tutorials

Last updated: 2025-07-05