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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
C
clear
Clear the screen

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
- Networking Middleware
- 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
    - B
    - C
      - c++filt
        Demangle C++ and Java symbols
      - cam-cdrom.so
        Provide a common access method for CD-ROMs
      - cam-disk.so
        Provide a common access method for hard disks
      - cam-optical.so
        Provide a common access method for optical disks
      - canctl
        Control a CAN (Controller Area Network) device
      - cat
        Concatenate and print files (POSIX)
      - cfgopen
        Search for configuration files (QNX)
      - chat
        Automated conversational script with a modem (QNX Neutrino)
      - chattr
        Manipulate the attributes of a file (QNX Neutrino)
      - chemod
        Change file extended mode bits (non-POSIX)
      - chgrp
        Change file group ownership (POSIX)
      - chkdosfs
        Check a DOS (FAT-12/16/32) filesystem for consistency (QNX Neutrino)
      - chkqnx6fs
        Check an entire Power-Safe filesystem for consistency (QNX Neutrino)
      - chmod
        Change file modes (POSIX)
      - chown
        Change the ownership of files and directories (POSIX)
      - cksum
        Display file checksums and block counts (POSIX)
      - clear
        Clear the screen
      - cmp
        Compare two files (GNU)
      - comm
        Select or reject lines common to two files (POSIX)
      - confstr
        Get or set a configuration string
      - coreinfo
        Display information about a core file
      - cp
        Copy files (POSIX)
      - cpio
        Copy file archives in and out (UNIX)
      - cpufreq
        This utility allows you to use the Enhanced SpeedStep, which is a series of dynamic frequency scaling technologies that's built into variants of microprocessors from Intel, such as the Goldmont core found on the Apollo Lake System-on-a-Chip (SoC).
      - cron
        Clock server (UNIX)
      - crontab
        Schedule periodic background work (POSIX)
      - csplit
        Split a file based on the context (POSIX)
      - cut
        Cut out selected fields of each line of a file (POSIX)
    - D
    - E
    - F
    - G
    - H
    - I
    - J
    - K
    - L
    - M
    - N
    - O
    - P
    - Q
    - R
    - S
    - T
    - U
    - V
    - W
    - X
    - Y
    - Z
    - 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.

clear

Clear the screen

Syntax:

clear

Runs on:

QNX Neutrino

Options:

None.

Description:

This utility clears the text-mode screen.

Note:

QNX Neutrino also supports a toybox version of this utility. For more information, go to the toybox entry of this reference.

Page updated: March 12, 2026