+ To extract a stack trace from a core file with gdb, do this:
+
+ gdb ./the-program ./core
+ bt
+
+ To extract a stack trace from a core file with dbx, do this:
+
+ dbx ./the-program ./core
+ where
+
+ If the bottom few lines of the output don't include the functions
+ `main_loop()' and `main()', then something's wrong: are you sure
+ the core file came from that program?