I'm surprised to hear that.

I've used several Linux distros over the years. -t has always been the way to specify a delay for the shutdown command.

See http://linux.about.com/od/commands/l/blcmdl8_shutdow.htm

In reply to Re^5: Net-SSH-Expect & Fedora-18 by RonW
in thread Net-SSH-Expect & Fedora-18 by hardy004

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