updating @cb and @ub

[Fairlight]

At Thu, Dec 21, 2006 at 06:08:25PM -0500 or thereabouts, 
suspect Bob Stockler was observed uttering:
> VL wrote (on Thu, Dec 21, 2006 at 03:22:04PM -0600):
> 
> | Any way of updating @cb or @ub.  Some old user ids are changing and I 
> | would like to change @cd and @ub in filepro so there username is pulled 
> | in. 
> 
> Other than using an Alien filePro file using that filePro
> file's "key" file as its "real" file. I can think of no
> other way.

What about something written to just go through the key/data segment(s) and
rewrite those parts of the 20-byte headers?  Perl could breeze through that.
You'd have to make sure nobody was using the files while they were being
operated on, but it certaily seems viable to me.

My only concern would be if any indexes were built on them.  I though
building indexes based on system-maintained fields was a Bad Idea[tm]
though.  Or is that only @rn?

mark->
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