Like QNX 4, Unix, and DOS, the QNX Neutrino RTOS is based on a command-line interface that you might want or need to use instead of the GUI.
For developing software, you don't always have to use the command line; on Linux and Windows, you can use our Integrated Development Environment (IDE) that provides a graphical way to write, build, and test code. The IDE frequently uses QNX Neutrino utilities, but “hides” the command line from you. For more information, see the IDE User's Guide.