: Dumps memory contents starting at a specific hexadecimal address. m(address, width) : Modifies memory at a given address interactively.
VxWorks shell provides many tools for diagnosing system problems.
cacheShow / cacheFlush — Inspect and flush CPU caches when working with DMA or memory-mapped I/O.
Real-time systems must monitor memory closely to prevent fragmentation and exhaustion. vxworks command cheat sheet
VxWorks supports TCP/IP stacks and network configuration via shell commands.
: Searches the symbol table for names matching the string. ld < : Loads an object module into memory. unld " " : Unloads a previously loaded module. reboot : Restarts the system (use with caution). 💡 Quick Tips for the VxWorks Shell
– Displays the VxWorks version, build date, and runtime details. : Dumps memory contents starting at a specific
VxWorks 7 introduced a unified CLI that mimics standard Linux/Unix shell behaviors alongside the traditional C expression shell. If you are using VxWorks 7, you can toggle between modes or use native CLI syntax. VxWorks 6 (C Expressions) VxWorks 7 (Native CLI) i task info Show Memory memShow vm info or mem show Ping Host ping "192.168.1.1", 4 ping 192.168.1.1 Change Directory cd "/hd0" cd /hd0 Change Shell Mode N/A cmd (to CLI) / C (to C Shell)
Here are some advanced VxWorks commands for power users:
Managing execution flow is critical in an RTOS environment. Use these commands to control tasks. cacheShow / cacheFlush — Inspect and flush CPU
The Ultimate VxWorks Command Cheat Sheet: A Complete Developer's Reference
: Spawns a new task. It accepts up to 9 arguments with a default priority of 100. ts taskId : Suspends a specific task by its ID. tr taskId : Resumes a suspended task. td taskId : Deletes a task immediately.
reboot – Performs a soft reset of the target hardware board. Quick Reference Summary Table version Print VxWorks version & BSP details System reboot Soft reset the target hardware Tasks i List all active tasks and status Tasks ti Show detailed task information Tasks sp Spawn a new task Memory memShow Display memory partition statistics Memory d Dump memory contents Network ifShow Display network interface configs Network ping " " Test network path connectivity IPC semShow Inspect semaphore blocking queues RTP rtpShow List running user-space processes
int x = 42; // Declare char * msg = "Hello"; // Declare string printVal x; // Print value printf("Msg: %s\n", msg); // Use stdio functions