[Info-vax] ZIP SYS$INPUT

[Wilm Boerhout]

Syltrem mentioned  on 7-12-2009 21:06:
> "Bob Koehler" <koehler at eisner.nospam.encompasserve.org> wrote in message 
> news:Y92qoN7t9DQ8 at eisner.encompasserve.org...
>> In article <ZUaSm.64139$Td3.21476 at en-nntp-01.dc1.easynews.com>, "Syltrem" 
>> <syltremzulu at videotron.ca> writes:
>>> Hello everyone
>>>
>>> Is there a way to have ZIP use SYS$INPUT (or SYS$NET) as input ?
>>>
>>> $ zip f.zip sys$input:
>>>         zip warning: name not matched: sys$input:
>>>
>>> zip error: Nothing to do! (DGSI_A1:[TREMBLAY.STMEP.HERABKP]F.ZIP;)
>>>
>>>
>>> What I'm trying to do is backup a disk and zip that while not storing the
>>> original saveset on disk (I don't have room for it). I want to store the
>>> compressed version (zip) only.
>>>
>>> I cannot tell BACKUP to pipe the thing directly to ZIP, as far as I know
>>> I thought to send the thing through a DECnet task but ZIP will not take
>>> SYS$NET as input
>>   I've had partial success getting BACKUP to store a saveset to a
>>   mailbox device, but it seems the blocksize is not trivial (first
>>   tried matching the default /blocksize to the mailbox size).
>>
>>   Getting data from a mailbox into zip is something that would probably
>>   be trivial, maybe I'll find time to look into it on my home cluster.
>>
>>   I forget which version of VMS you had, should I assume you don't
>>   have create/mailbox?
>>
> 
> A mailbox is a good idea.
> 
> I have VMS VAX 7.3
> No CREATE/MAILBOX
> 
> I can create a mailbox from DCL (process termination mailbox) and that makes 
> a mailbox like this :
> 
> $ sh dev/fu MY_MBX
> 
> Device MBA18244:, device type local memory mailbox, is online, 
> record-oriented
>     device, shareable, mailbox device.
> 
>     Error count                    0    Operations completed 
> 4
>     Owner process                 ""    Owner UIC 
> [TREMBLAY]
>     Owner process ID        00000000    Dev Prot 
> S,O:RWPL,G,W
>     Reference count                1    Default buffer size 
> 256
> 
> $
> 
> 
> Otherwise it can be created by a Basic program.
> 
> Before spending time on this (although it's fun) I'd still like to see 
> whether I can do it with the DECnet task. Currently using "-" in zip doesn't 
> work for me... (see previous post)

I think "-" works for you in the sense that it tries to process whatever 
it is given as SYS$INPUT / SYS$NET, but then barfs on what it finds 
there. Try /BLOCK=2048 to make your setup more like mine. This also 
worked with ZIP 3.0, the resulting archive had a saveset of sorts in it, 
but it turned out to be corrupt.

/Wilm