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QNX Software Development Platform
QNX SDP is a cross-compiling and debugging environment, including an IDE and command-line tools, for building binary images and programs for target boards running QNX Neutrino 7.1.
Utilities & Libraries
Utilities Reference
H
host
DNS lookup utility

QNX Momentics IDE User's Guide
This User's Guide describes version 7.1 of the Integrated Development Environment (IDE) that's part of the QNX Momentics tool suite.
QNX Software Development Platform
QNX SDP is a cross-compiling and debugging environment, including an IDE and command-line tools, for building binary images and programs for target boards running QNX Neutrino 7.1.
- Quickstart Guide
- OS Components & Operations
- Audio & Graphics API
- Multimedia
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- Programming
- Sensor Framework
- System Security Guide
  The QNX System Security Guide is intended for both system integrators who are responsible for the security of a QNX Neutrino RTOS system and developers who want to create a QNX Neutrino resource manager free from vulnerabilities.
- Utilities & Libraries
  - Addon Interfaces Library Reference
  - C Library Reference
  - Devctl and Ioctl Commands
  - JSON Library Reference
  - PAM Reference
  - Utilities Reference
    - Utility Conventions
    - A
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      - ham
        High-availability manager
      - hamctrl
        Control a high-availability manager
      - hd
        Display files in decimal, hex, octal, or ASCII (UNIX)
      - head
        Copy the first part of files (POSIX)
      - hidview
        Display information about human-interface devices
      - hogs
        List the processes that are hogging the CPU
      - host
        DNS lookup utility
      - hostapd-version
        Daemon for access point and authentication servers
      - hostapd_cli-version
        Query the hostapd daemon from a command-line client
      - hostname
        Set or print the name of the current host system
      - /etc/hosts
        Hostname database (UNIX)
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    - Commonly Used Environment Variables
    - Selecting the Target System
    - Glossary
  - WPA Control Interface Reference
    This document provides a reference for the Wi-Fi Protected Access (WPA) control interface, which provides a C API for the WPA/IEEE 802.11i protocols in Wi-Fi client stations. Application developers who want to control WPA operations and get associated status and event data should read this reference.
QNX Hypervisor
The QNX Hypervisor allows you to run multiple OSs on a target system so you can separate critical and non-critical functions, support a wide variety of applications, and reduce hardware costs.
QNX Software in the Cloud
QNX Software in the Cloud enables developers to use the QNX software in Amazon Web Services (AWS) and Microsoft Azure (Azure).
QNX Advanced Virtualization Frameworks User's Guide
This User's Guide is aimed at all systems integrators and developers who want to design and build embedded systems using the QNX Advanced Virtualization Frameworks.
Typographical Conventions, Support, and Licensing
This section describes the typographical conventions used throughout the documentation and explains how to obtain technical support.

host

DNS lookup utility

Syntax:

host [options...] {name} [server]

Runs on:

QNX Neutrino

Description:

The host utility is for performing DNS lookups. It is part of BIND DNS server software. You normally use it to convert names to IP addresses and vice versa.

For more information, first use the -V option to check the current version, then find the corresponding BIND Administrator Reference Manual at: https://kb.isc.org/docs/aa-01493

Page updated: March 12, 2026