------  Error: off
--- Reset: off
$! 0: 

--- Reset: on
$! 0: 

--- Reset: off
$! 17: File exists

--- Reset: on
$! 0: 

--- Reset: off
$! 17: File exists

--- Reset: on
$! 0: 


------  Error: on
--- Reset: off
$! 17: File exists

--- Reset: on
$! 9: Bad file descriptor

--- Reset: off
$! 9: Bad file descriptor

--- Reset: on
$! 9: Bad file descriptor

--- Reset: off
$! 9: Bad file descriptor

--- Reset: on
$! 9: Bad file descriptor