Home
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 the QNX OS 8.0.
Utilities & Libraries
Utilities Reference
F
false (target)
Return false value (POSIX, toybox)

QNX Momentics IDE User's Guide
This User's Guide describes version 8.0 of the Integrated Development Environment (IDE) that's part of the QNX 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 the QNX OS 8.0.
- Quickstart Guide
- System Architecture
  The System Architecture guide accompanies the QNX OS and is intended for both application developers and end-users.
- OS Components & Operations
- Graphics
- Programming
- System Security Guide
  The QNX System Security Guide is intended for both system integrators who are responsible for the security of a QNX OS system and developers who want to create a QNX OS resource manager free from vulnerabilities.
- Utilities & Libraries
  - C Library Reference
  - Devctl and Ioctl Commands
  - JSON Library Reference
  - PAM Reference
  - QNX Helpers Developer's Guide
    These libraries provide QNX helpers, including helpers that assist with logging, string conversion, and number and type sizes.
  - SPI Framework Technote
  - Utilities Reference
    - Utility Conventions
    - A
    - B
    - C
    - D
    - E
    - F
      - false (host)
        Return false value (POSIX)
      - false (target)
        Return false value (POSIX, toybox)
      - fcat
        Display compressed (frozen) files (UNIX)
      - fdisk
        Create and manage partitions on a hard disk
      - fesh
        Fat embedded shell (QNX OS)
      - fgrep (host)
        Fixed string grep (UNIX)
      - fgrep (target)
        Fixed string grep (POSIX, toybox)
      - file
        Determine file type (POSIX, toybox)
      - find (host)
        Find files (POSIX)
      - find (target)
        Find files (POSIX, toybox)
      - flashctl
        Manage a flash filesystem
      - flex
        Generate programs for lexical tasks
      - fmt
        Format concatenated input (POSIX, toybox)
      - fold
        Fold lines (POSIX)
      - freeze
        Compress and uncompress files (UNIX)
      - fs-dos.so
        DOS filesystem (QNX OS)
      - fs-ext2.so
        Linux Ext2 filesystem
      - fs-nfs3
        NFS 3 client filesystem (QNX OS)
      - fs-qcfs.so
        Shared object that supports the QNX compressed filesystem (QCFS)
      - fs-qnx6.so
        Shared object that supports the Power-Safe filesystem (QNX OS)
      - fs-qtd.so
        Shared object that supports the QNX Trusted Disk feature (QNX OS)
      - fs-squash.so
        Shared object that supports Linux Squash filesystem (QNX OS)
      - fs-udf.so
        Universal Disk Format and ISO 9660 filesystem support
      - fsencrypt
        Filesystem encryption manager
      - fsevmgr
        Filesystem event manager
      - fsysinfo
        Display filesystem statistics (QNX OS)
      - /etc/fstab
        File for predefined mountpoints
      - fullpath
        Display network-qualified pathnames (QNX)
      - fuser
        List the process IDs of all processes that have one or more files open (POSIX)
    - 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.
- Migrating to QNX OS 8.0
QNX Software in the Cloud
QNX Toolkit for Visual Studio Code
This User's Guide describes the QNX^® Toolkit for Visual Studio Code. The guide introduces you to the QNX Toolkit by explaining the QNX development environment and how to build, run, and debug your QNX^® Operating System (OS) applications and systems.
Typographical Conventions, Support, and Licensing
This section describes the typographical conventions used throughout the documentation, explains how to obtain technical support, and provides some information about licensing.

false (target)

Return false value (POSIX, toybox)

Syntax:

false

Runs on:

QNX OS

Options:

None.

Description:

The false utility does nothing but exit immediately with a nonzero exit code.

The shell has a builtin false command; see ksh. To make sure you use the executable, specify the full path.

This utility is provided as part of the toybox package. For information on how to enable it, see toybox.

Contributing author:

Rob Landley and the toybox project (see https://landley.net/toybox/).

Page updated: August 09, 2024