This is just between you and me, OK, but a couple of years back I managed to do something similar on an IBM i, in its QShell (AIX) environment. And it felt bad,

This is just between you and me, OK, but a couple of years back I managed to do something similar on an IBM i, in its QShell (AIX) environment. And it felt bad, too, because such an unrecoverable glitch is almost unheard of in iSeries land!