echo Error >/does/not/exist; echo One:$? | |
t=BAD | |
t=Ok >>/cant/be/created; echo One:$? | |
echo $t | |
! >/cant/be/created; echo Zero:$? | |
exec >/cant/be/created; echo One:$? | |
exec /bin/true >/cant/be/created; echo One:$? | |
! exec /bin/true >/cant/be/created; echo Zero:$? | |
echo Done |