Just as a curiosity; something went wrong with a Linux machine, making the root file system show up as "64Z". A few commands work, like
kill, but others like
reboot come up with "command not found" (since it can't read the root filesystem), and
chmod comes up with a segmentation fault.
Is there any way to restart the system anyway, i.e. without the
reboot program? I tried
kill -PWR 1 (sending SIGPWR to init), but this didn't seem to do anything.
It's mostly an academic curiosity. The labmate who was doing whatever large-database work that caused the failure will be physically restarting the machine soon.