| Command | Description |
|---------|-------------|
| d <address> [,width] [,count] | Display memory (hex/ASCII) – e.g., d 0x1000, 4, 32 |
| m <address> <value> | Modify memory byte (use mh for half-word, mw for word) |
| fill <start> <end> <value> | Fill memory range with a byte value |
| copy <src> <dst> <len> | Copy memory |
| search <start> <end> <pattern> | Search memory for a byte pattern |
| checkStack <taskId> | Check stack overflow/usage of a task |
Tip: For 32-bit aligned word display:
d 0x10000, 4– width 4 means 4 bytes per column.
Here’s a detailed VxWorks Command Cheat Sheet, focused on the most useful shell and kernel commands for day-to-day debugging, system inspection, and task management.
VxWorks versions differ slightly (especially pre-6.x vs 6.x/7.x), but these commands work in most VxWorks shell (CMD mode) environments.
| Command | Description |
|---------|-------------|
| semShow | List all semaphores |
| semGive <semId> | Give a binary/counting semaphore |
| semTake <semId> [,<timeout>] | Take a semaphore |
| msgQShow | Show message queues |
| msgQSend <qId>, <msg>, <size>, <timeout>, <prio> | Send to message queue |
| msgQReceive <qId>, <buffer>, <size>, <timeout> | Receive from queue |
| eventReceive <events> [,<timeout>] | Wait for events |
VxWorks is a real-time operating system (RTOS) widely used in embedded systems. This cheat sheet provides a concise reference to common VxWorks commands, helping users quickly navigate and interact with the system.