The where command prints the call stack.
| where | Print a procedure traceback. |
| where number | Print the number top frames in the traceback. |
| where -f number | Start traceback from frame number.. |
| where -h | Include hidden frames. |
| where -l | Include library name with function name |
| where -q | Quick traceback (only function names). |
| where -v | Verbose traceback (include function args and line info). |
where:
Any of the above forms may be followed by a thread or LWP ID to obtain the traceback for the specified entity.