beware mt

From: tsh@mrc-lmb.cam.ac.uk
Date: Tue Dec 03 2002 - 11:56:55 EST

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Hi all,

I just has a minor catastrophe with the mt command, which
I thought I'd share with you. I inadvertently typed

   mt -f /dev/tape w

instead of

   mt -f /dev/tape rewind

to rewind my tape, and it promptly wrote a filemark at the
beginning of my tape.

As far as I can see from the man pages, w is not a documented
command, and everything that *is* documented is non-destructive,
so beware...

Cheers,
Terry.

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