Uhh, if the system powers off immediately after the first command (mv a b), the second command (mv c d) would never run. So where would d come from if the command that created it never executed?
Er, sorry: I meant: if the first command runs, the plug is pulled, system starts again, second command runs.
Er, sorry: I meant: if the first command runs, the plug is pulled, system starts again, second command runs.