>> I think you're talking about RT-11, Allison, but I may be wrong because
>> the utility name you specify and the options you're talking about make
>> no sense under RT-11. Are you maybe talking about some other OS?
>>
>> Under RT-11, it's not PIP, it's DUP, and the option is /G:n.
>> The CCL equivalent is COPY/FILE/DEVICE/START:n.
>
>It is RT but brain fart on the app name it is dup.
Admittedly, under RT-11 trying to figure out whether DUP or PIP is performing
a particular COPY function is sometimes a bit fuzzy. (Let's see, COPY
can also invoke FILEX, too!)
>> Or, even easier, just do an FORMAT/VERIFY:ONLY. To be really thorough,
>> do a FORMAT/VERIFY:ONLY/PATT:7777 to write 12 different patterns over
>> the disk.
>
>Forgot that one. ;)
It's very useful for wiping media. Of course, with some common types
of media, FORMAT/VERIFY:ONLY doesn't wipe all the blocks: for example,
with RX01's and RX02's, it leaves track 0 untouched. DEC OS's don't
usually store data on track 0, but still... . And RL01's and RL02's
might end up with replacement blocks being untouched by the operation, too.
I know that the subject of this thread is how we never mess around with
confidential data, but as a tool for finding things that you might not
have otherwise thought of, Bob Schor's "SNOOP" program is quite effective
at finding files that used to be on a disk, even identifying entire
logical disks. It's on the RT SIG tape 11S113, available by anonymous
ftp from:
ftp://sunsite.unc.edu/pub/academic/computer-science/history/pdp-11/rt/decus/11s113/
in "schor2.dsk". Bob Schor also has a program called "CLEAR" whose
only purpose is to blank out unused blocks on a RT-11 disk; this is in
"schor1.dsk".
--
Tim Shoppa Email: shoppa_at_trailing-edge.com
Trailing Edge Technology WWW: http://www.trailing-edge.com/
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Received on Fri May 28 1999 - 12:47:23 BST