When a system crashes or behaves unpredictably, use these low-level commands to inspect hardware registers and memory addresses. Memory Manipulation
or dir – Lists files and directories in the current working directory. cd "path" – Changes the current working directory.
Tasks are the fundamental units of execution in VxWorks. Managing their priorities, states, and lifecycles is critical for real-time performance.
: Displays a history of the recently executed shell commands. 4. Network Configuration and Statistics
| Command | Description | Example | |---|---|---| | ifShow or ifShow "ifname" | Display network interface configuration and status | ifShow "gem0" | | ifconfig | Configure network interfaces | ifconfig("gem0 192.168.1.100") | | ping "IP" | Test connectivity to remote host | ping "192.168.1.1" | | inetstatShow | Display all Internet protocol sockets | inetstatShow | | routeShow | Display IP routing table summary | routeShow | | mRouteShow | Display verbose IP routing information | mRouteShow | | routeAdd "dest","gate" | Add a route to the routing table | routeAdd "10.0.0.0","192.168.1.1" | | routeDelete "dest","gate" | Delete a route from the routing table | routeDelete "10.0.0.0","192.168.1.1" | | arpShow | Display known ARP entries | arpShow | | hostAdd "name", "IP" | Add hostname resolution entry | hostAdd "server","10.0.0.1" | vxworks command cheat sheet
: Displays memory contents starting at a specific hex address. m (address)
i – Displays a summary of all active tasks, including ID, priority, status, and current PC (Program Counter).
VxWorks is a real-time operating system (RTOS) that provides a powerful command-line interface, typically accessed via the ( windsh or the target-resident shell) or the User-Mode Shell (cmd) for Real-Time Processes (RTPs) . Core Shell Basics
Similar to UNIX, VxWorks supports file operations when a filesystem (e.g., dosFs , rt11Fs ) is mounted. When a system crashes or behaves unpredictably, use
The VxWorks shell provides two editing modes for efficient command entry.
: Displays a built-in summary of available shell commands.
The VxWorks kernel shell is often disabled by default to keep the image size minimal; you must enable the BUNDLE_STANDALONE_SHELL component. Once active, you can customize the editing environment.
Jump to How to Get Help & Explore Commands Tasks are the fundamental units of execution in VxWorks
Tip: In newer VxWorks versions, you can change environments by typing cmd to enter the command shell or csh to return to the C-expression shell. Task and Kernel Management
: Displays global system memory statistics, including total allocated bytes, free memory blocks, and largest available contiguous blocks.
String arguments (like task names or paths) often need to be enclosed in double quotes (e.g., td "tNetTask" ). Commas: Arguments are separated by commas. Case Sensitivity: The shell is case-sensitive. Wildcards: lkup supports wildcards to search for symbols.
VxWorks utilizes the Wind River Network Stack. Use these tools to verify connectivity and interface configurations. Network Status