Note: This is not an exhaustive list, and some commands may have additional options or arguments. Refer to the VxWorks documentation for more information.
: Displays detailed information from the Task Control Block (TCB), including register values. tt(taskId) : Shows a task's stack trace, useful for debugging crashes. Google Groups System & Memory Diagnostics
: Frees a previously allocated memory block at the specified hex address.
Which you are targeting (e.g., VxWorks 6.x or VxWorks 7)
Configures or displays network interface parameters (IP, netmask, status). muxShow Target Shell / C-Mode vxworks command cheat sheet
This comprehensive guide serves as an advanced cheat sheet and reference manual for system administrators, embedded software engineers, and real-time systems developers. 1. System Information and Hardware Status
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)
| Command | Description | |---------|-------------| | help or h | Show available shell commands | | lkup [“string”] | List symbols in system (partial match) | | symFind <name> | Find symbol address | | print <expr> | Evaluate expression (C syntax) | | b <address> | Set breakpoint (if shell has debugging support) | | c | Continue after break | | t | Trace single step | | tr | Trace until return | | reboot | Restart VxWorks | | boot | Boot from default device |
General commands for system status and direct memory manipulation. Note: This is not an exhaustive list, and
| Command | Description | |---------|-------------| | d <address> [,<width>] [,<count>] | Display memory (width: b, w, l). Example: d 0x100000, l, 16 | | dasm <address> [,<count>] | Disassemble from address | | m <address> <value> | Modify memory (write byte/word/long) | | fill <address>, <len>, <value> | Fill memory region with value | | copy <src>, <dest>, <len> | Copy memory | | cmp <addr1>, <addr2>, <len> | Compare two memory regions | | show <symbolName> | Show value of global symbol |
Activate via shConfig "LINE_EDIT_MODE=emacs" for familiar GNU-style editing.
Similar to UNIX, VxWorks supports file operations when a filesystem (e.g., dosFs , rt11Fs ) is mounted.
Whether you are using the or the modern cmd shell tt(taskId) : Shows a task's stack trace, useful
inetstatShow – Shows all active internet connections, open ports, and protocol states (similar to netstat ). routeShow – Displays the current IP routing table. Connectivity Testing
bootConfig, boot line parameters, and targetConfig — Modify boot behavior and environment variables.
These are the most used commands for controlling the real-time processes (tasks) that define a VxWorks system. sp (entryPt, arg1, ...) : Spawns a new task with default parameters. sps (entryPt)
Monitoring heap utilization and memory leaks prevents sudden system degradation.