[Info-vax] ZIP SYS$INPUT

[Syltrem]

"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)

Syltrem