Fellow list readers:

If you don't want to have to get the case *exactly*
correct and/or can't remember posix commands you can
accomplish the same thing with:

:purgelink oldudc
:rename newudc,oldudc

Duane Percox    wk: 650.372.0200x608  fax: 650.372.3386
[log in to unmask]
www.qss.com
qwebs.qss.com


 -----Original Message-----
 From: Dave Darnell [mailto:[log in to unmask]]
 Sent: Wednesday, November 22, 2000 7:45 AM
 To: [log in to unmask]
 Subject: Re: [HP3000-L] posix mv command, was UDC theory


 This ability to rename an open file is one I really miss from my HP1000
 days.

 hurrah for Posix - I guess I'll have to start using it!

 -dtd

 > -----Original Message-----
 > From: Paveza, Gary [mailto:[log in to unmask]]
 > Sent: Wednesday, November 22, 2000 8:43 AM
 > To: [log in to unmask]
 > Subject: Re: posix mv command, was UDC theory
 >
 >
 > From what I recall, posix uses file descriptors, or handles.
  The name
 > doesn't matter.  Once the file is opened, in posix you can
 > even rm the file.
 > The file is still there, just the entry from the directory
 > listing is gone.
 > When the last accessor releases the file, then the descriptor
 > is released
 > and the inodes (where the actual data is stored) are freed.
 >
 > -------------------------------------------------------------
 > Gary L. Paveza, Jr.
 > Technical Services Manager
 > (302) 761-3173 - voice
 > (877) 720-2970 - pager
 >
 >         -----Original Message-----
 >         From:   Tracy Pierce [SMTP:[log in to unmask]]
 >         Sent:   Wednesday, November 22, 2000 10:37 AM
 >         To:     [log in to unmask]
 >         Subject:        [HP3000-L] posix mv command, was UDC theory
 >
 >         John Burke writes...
 >         > ...
 >         > - edit the file (say udc.pub.sys), making your changes and
 >         > keeping it as, for example, udcnew.pub.sys.
 >         >
 >         > - use the posix move command to replace udc with udcnew:
 >         >
 >         > :mv.hpbin.sys "/SYS/PUB/UDCNEW /SYS/PUB/UDC"
 >         >
 >         > Respond "yes" to the question about replacing udc. All
 >         > subsequent logons
 >         > will get the new version of the udc. I use this
 > trick all the time
 > to
 >         > replace files in use.
 >         >
 >         > John Burke
 >         >
 >         >
 >         And a cute trick it is indeed, at least to this Posix
 > pre-neophyte.
 > How
 >         does it work, that is, what's really happening with
 > the files?  I
 > have to
 >         assume the SET/SHOWCATALOG settings remain pointed to
 > the original
 > version;
 >         does mv just build a link, or???
 >
 >         Tracy Pierce
 >
 >
 >
 >
 >
 >         > > -----Original Message-----
 >         > > From: Steve Hammond [mailto:[log in to unmask]]
 >         > > Sent: Wednesday, November 22, 2000 7:09 AM
 >         > > To: [log in to unmask]
 >         > > Subject: [HP3000-L] UDC theory
 >         > >
 >         > >
 >         > > Just a sanity check on my udc theory, which is a
 > little rusty.
 >         > >
 >         > > When I upgrade from 5.5 to 6.0, I need to make
 > one change to
 >         > > my PowerHouse udc. This udc is set account by account.
 >         > >
 >         > > If no one is logged on into any of the accounts
 > that use the
 >         > > udc, I only need to make the modification to the
 > udc file and
 >         > > keep it. Then the changes are there the next time someone
 >         > > logs into that account.
 >         > >
 >         > > Is this correct?
 >         > >
 >         > > TIA
 >         > >
 >         > > steve
 >         > >
 >         >
 >