After saving a run, you can restore the run using the restore command. dbx uses the information in its save file. When you restore a run, dbx first resets the internal state to what it was at the start of the run, then reissues each of the debugging commands in the saved run.
For exact restoration of a saved debugging run, all the inputs to the run must be exactly the same: arguments to a run-type command, manual inputs, and file inputs.
To restore a saved debugging run
(dbx) restore
To restore a debugging run saved to a file other than the default:
(dbx) restore filename