Vxworks Command Cheat Sheet [UPDATED]

Real-time systems must monitor memory fragmentation and leaks vigilantly to maintain deterministic performance. memShow / show

The Object-Module Loader enables dynamic loading of compiled object files at runtime, eliminating the need to reboot the system after recompiling modules. vxworks command cheat sheet

: Dynamically loads a compiled object file directly into kernel memory space. This cheat sheet covers the most essential commands

This cheat sheet covers the most essential commands for the VxWorks C-Shell (the default shell for older versions like 5.x and 6.x). ⚠️ Shell Basics : Must be separated by : Must be enclosed in double quotes Hex Values : Prefixed with 🏃 Task Management Description Display a summary of all active tasks Spawn (start) a new task sp myFunc, arg1, arg2 Spawn a task in a sps myFunc a task by ID or name td 0x12345 a running task ts "tMyTask" a suspended task tr 0x12345 Task Information (detailed status) ti "tMyTask" Task Trace (shows the stack trace) tt 0x12345 🔍 System & Debugging Description Search the system symbol table lkup "myGlobal" checkStack Show stack usage for a specific task checkStack "tShell" printErrno Decode the last error number into English printErrno 0x11 List all recognized hardware devices Display VxWorks version and build info Display command history 💾 Memory Operations Description memory (hex dump) d 0x800000, 128 memory (interactive prompt) m 0x800000 Fill a block of memory with a value fill 0x8000, 100, 0 adrSpaceShow Show memory map / address space adrSpaceShow 📂 File System & Navigation Description List files in current directory Long list (shows sizes/dates) Change directory cd "/ata0/" Print working directory Copy a file copy "old.txt", "new.txt" ⚙️ Kernel & Booting Description Restart the system bootChange Edit boot parameters (IP, file paths) bootChange Load a module into memory < myModule.o Unload a module unld "myModule.o" 💡 Pro Tips : Most commands accept either the (in quotes) or the . Using the ID is often faster. Control Keys to force a reboot if the shell is unresponsive. Redirection and system configuration.

The Ultimate VxWorks Command Cheat Sheet and CLI Guide VxWorks is a highly reliable real-time operating system (RTOS) used in critical systems like aerospace, defense, and industrial automation. Navigating its command-line interface—whether using the legacy VxWorks shell ( vxFusion / target shell ) or the modern, Unix-like Wind River Shell ( cmd )—is essential for debugging, monitoring, and system configuration.