According to Giles Lean:
>
>I've updated machines "remotely" (aka without plugging in a keyboard
>and screen for the console) but it's not something I'd want to do on a
>production server I cared about.
>

I have done this but only with a recent backup tape, write-protected,
in the drive, a bootable cd-rom in the cd drive and with access to a
serial console via a terminal server.

>
>AFAIK the old binary is unlinked and the new one written.  You could
>check the source and/or use ktrace to confirm this.
>

Just to be clear - sysinst will tell pax/tar to carefully unlink the
file first.  In normal operation I believe that pax/tar just open the
file for write, you have to use the 'u' flag to tell them to unlink
the file first.

-- 
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Brett Lymn, Computer Systems Administrator, BAE SYSTEMS
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