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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 the QNX OS 8.0.
Utilities & Libraries
Utilities Reference
W
which (target)
Search $PATH for executable files matching filename(s) (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
    - G
    - H
    - I
    - J
    - K
    - L
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    - V
    - W
      - waitfor
        Wait until a stat() on the specified path succeeds
      - wc
        Count lines, words, and characters in input (POSIX, toybox)
      - wdtkick
        Watchdog timer
      - which (host)
        Locate a program file (UNIX)
      - which (target)
        Search $PATH for executable files matching filename(s) (POSIX, toybox)
      - whoami
        Print the current user name (POSIX, toybox)
      - wipe
        Securely wipe (erase) media
      - wpa_cli-version
        WPA command-line client for interacting with wpa_supplicant
      - wpa_passphrase-version
        Set WPA passphrase for a SSID
      - wpa_supplicant-version
        Wi-Fi Protected Access (WPA) client and IEEE 802.1X supplicant
    - 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.

which (target)

Search $PATH for executable files matching filename(s) (POSIX, toybox)

Syntax:

which [-as] filename...

Runs on:

QNX OS

Options:

-a: Show all matches.
-s: Search for shared objects using LD_LIBRARY_PATH and _CS_LIBPATH instead of PATH.
filename: The pathname of a file to search for.

Description:

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