Vxworks Command Cheat Sheet

VxWorks, developed by Wind River, is the industry-leading real-time operating system (RTOS) used in aerospace, defense, medical devices, and industrial control systems. Whether you are debugging a satellite, configuring a network router, or testing an embedded prototype, mastering the VxWorks command-line shell is an essential skill.

| Command | Description | Example | |---------|-------------|---------| | semBCreate(<options>, <initState>) | Create binary semaphore | -> semId = semBCreate(SEM_Q_FIFO, SEM_FULL) | | semTake(<semId>, <timeout>) | Take semaphore (WAIT_FOREVER = -1) | -> semTake(semId, -1) | | semGive(<semId>) | Give/release semaphore | -> semGive(semId) | | semDelete(<semId>) | Delete semaphore | -> semDelete(semId) | | semShow(<semId>, <level>) | Show semaphore state | -> semShow(semId, 1) | | msgQCreate(<maxMsgs>, <msgSize>, <options>) | Create message queue | -> qId = msgQCreate(10, 64, MSG_Q_FIFO) | | msgQSend(<qId>, <buffer>, <nBytes>, <timeout>, <priority>) | Send message | -> msgQSend(qId, "hello", 5, -1, 0) | | msgQReceive(<qId>, <buffer>, <nBytes>, <timeout>) | Receive message | -> msgQReceive(qId, buf, 64, -1) | vxworks command cheat sheet

This is organized into logical categories, covering legacy commands (for VxWorks 5.x and 6.x) as well as modern equivalents (VxWorks 7). Commands are presented with syntax, description, and practical examples. VxWorks, developed by Wind River, is the industry-leading

VxWorks uses a shell that is essentially a C interpreter, meaning arguments must be separated by and strings must be Commands are presented with syntax

Debugging ISRs and hardware faults is critical in RTOS environments.

Modern VxWorks 7 adopts a Linux-like shell with builtins.