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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
P
printenv
Print environment variables (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
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      - passwd
        Change the login password or create new user names (UNIX)
      - paste
        Merge corresponding lines from each input file (POSIX, toybox)
      - patch
        Apply a unified diff to one or more files (POSIX, toybox)
      - pci-server
        Resource manager process that manages the PCI hierarchy
      - pci-tool
        Display PCI information
      - pdebug
        Process-level debugger
      - pf
        Packet Filter pseudo-device
      - /etc/pf.conf
        Packet filter configuration file
      - pfctl
        Control the packet filter (PF) and network address translation (NAT) device
      - pflog
        Packet filter logging interface
      - pidin
        Display information about the processes in the system (QNX OS)
      - ping
        Send ICMP ECHO_REQUEST packets to network hosts
      - pipe
        Pipe manager (QNX OS)
      - plainrsa-gen
        Generator for Plain RSA keys
      - printenv
        Print environment variables (POSIX, toybox)
      - printf
        Write formatted output (POSIX, toybox)
      - procnto*
        Microkernel and process manager (QNX OS)
      - /etc/protocols
        Protocol name database (UNIX)
      - ps
        Report process status (POSIX)
      - pted
        Partition table editor
      - ptpd2
        Precision Time Protocol (PTP) daemon
      - pwd (host)
        Print working directory name (POSIX)
      - pwd (target)
        Print working (current) directory (POSIX, toybox)
      - python
        Object-oriented programming and scripting language.
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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.
- 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.

printenv

Print environment variables (POSIX, toybox)

Syntax:

printenv [-0] [env_var...]

Runs on:

QNX OS

Options:

-0: Use \0 as delimiter instead of \n.
env_var: The environment variables to print the values of.

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