It's used in the Solaris init scripts for shutdown, shortly before the system tries to unmount all mounted disk volumes. I made the same mistake nullc made onc

It's used in the Solaris init scripts for shutdown, shortly before the system tries to unmount all mounted disk volumes. I made the same mistake nullc made once, as I was more accustomed to linux than solaris. That was after hours and the effect was immediate, but it was still a pretty jarring and memorable moment.