Vxworks - Command Cheat Sheet

Activate via shConfig "LINE_EDIT_MODE=emacs" for familiar GNU-style editing.

| Command | C Interpreter Equivalent | Description & Use Case | | --- | --- | --- | | lkup ["string"] | symFindByName( ) | . Searches the system symbol table for functions or variables. lkup "myFunc" finds all symbols with that string. | | lkAddr <address> | - | Display the symbol table entry near a given memory address . | | l <address>, [n] | - | Disassemble code . Shows n assembly instructions starting at a memory address (default 10). | | d <address>, [number], [width] | - | Display memory . Dumps memory contents from a given address. width can be 1, 2, 4, or 8 bytes. | | m <address>, [width] | - | Modify memory . Changes the value at a specific memory address. | | memShow [1] | memShow( ) | Show memory stats . Displays the system's free and allocated memory pool. Adding 1 provides a more detailed report. | | printErrno <value> | - | Decode error numbers . Translates a numeric error code into a human-readable VxWorks error message. In C mode, errno is equally essential. |

Lists active network interfaces, IP addresses, and MAC addresses. ping("host", count, flags); ping host

VxWorks allows modules to be compiled externally and linked dynamically onto the running target system.

: Dumps memory contents starting at a specific memory address. vxworks command cheat sheet

VxWorks allows direct access to system memory. Use these commands with caution, as improper memory modification can instantly crash the RTOS kernel. C-Expression Shell (Csh) Command Shell (Cmd) Description memShow; mem show

semBCreate / semBDelete / semGive / semTake — Binary semaphore functions.

: Displays the virtual memory page allocations and address space layout (on architectures supporting MMU). 4. Network Configuration and Diagnostics

: Frees a previously allocated memory block at the specified address. 3. System and Hardware Diagnostics lkup "myFunc" finds all symbols with that string

routeAdd / routeShow — Manage routing table entries.

The Ultimate VxWorks Command Cheat Sheet: Real-Time OS Navigation Guide

: Deletes a file permanently from the media device.

Ultimate VxWorks Command Cheat Sheet: The Embedded Developer’s Guide Shows n assembly instructions starting at a memory

Best practice: document bootlines and keep a reproducible image; include fallbacks (e.g., network boot) for recovery.

The VxWorks kernel shell supports two distinct modes: the and the command interpreter .

: Displays a built-in summary of available shell commands.

In contrast, VxWorks 6.9 or earlier could often access physical addresses directly using d and m without address translation. Prior to performing any low-level memory operations in VxWorks 7, it is essential to verify that the target region has been properly mapped to virtual memory, otherwise a Data Abort exception will occur.

: Search for symbols (functions/variables) in the system symbol table.