On Thu, 14 Oct 1999 03:44:15 -0400, Lars Appel
<[log in to unmask]> wrote:
>>Some caveats with tar on 5.5, at least. This version uses a new tar
>>format to encode the MPE file attributes of the files in the archive.
>
>> ... You can switch of this
>>"feature" when creating the tar-archive by issuing the, undocumented,
>>-A flag.
>
>While I haven't checked the PDF manuals at docs.hp.com (as I am not
>keen on the associated download), the Shell on my 5.5 machine seems
>to document tar -A in help as well as man...
>
> shell/iX> help tar | head
> tar -- USTAR-compatible tape archiver to copy and back up files
> Usage: tar -c[#s][AbfvwlzUV] [tapefile] [blocksize] [volpat] file ...
> tar -r[#s][bfvwlzUV] [tapefile] [blocksize] [volpat] file ...
> tar -t[#s][AbfvzUV] [tapefile] [blocksize] [volpat] [file ...]
> tar -u[#s][bfvwlzUV] [tapefile] [blocksize] [volpat] file ...
> tar -x[#s][AbfvwpmozUV] [tapefile] [blocksize] [volpat] [file ...]
> Key letters (one of):
> -A toggles whether or not the -c, -t, and -x options process MPE
> attributes
> -b set number of 512 byte blocks for archive I/O (must have blocksize)
> -c create new (empty tape archive)
>
>[ rest snipped for brevity; man page not shown here for brevity, too ]
...
Strange:
/lusr/danny 133 # uname -a
MPE/iX HP939 C.55.03 C.05.08 SERIES 939-020
This system has powerpatch 6 installed, I've seen the same on other
systems with powerpatch 7 as well. Read on.
/lusr/danny 134# man tar
tar(1) MPE/iX Shell and Utilities
tar(1)
______________________________________________________________________
NAME
tar -- USTAR-compatible tape archiver to copy and back up files
SYNOPSIS
tar -c[#sbfvwlzU] [-V volpat] [tapefile] [blocksize] file ...
tar -r[#sbfvwlzU] [-V volpat] [tapefile] [blocksize] file ...
tar -t[#sbfvzU] [-V volpat] [tapefile] [blocksize] [file ...]
tar -u[#sbfvwlzU] [-V volpat] [tapefile] [blocksize] file ...
tar -x[#sbfvwpmozU] [-V volpat] [tapefile] [blocksize] [file ...]
...
No -A here.
/lusr/danny 133 # help tar|more
tar -- USTAR-compatible tape archiver to copy and back up files
Usage: tar -c[#s][AbfvwlzUV] [tapefile] [blocksize] [volpat] file ...
tar -r[#s][bfvwlzUV] [tapefile] [blocksize] [volpat] file ...
tar -t[#s][AbfvzUV] [tapefile] [blocksize] [volpat] [file ...]
tar -u[#s][bfvwlzUV] [tapefile] [blocksize] [volpat] file ...
tar -x[#s][AbfvwpmozUV] [tapefile] [blocksize] [volpat] [file
...]
Key letters (one of):
-A toggles whether or not the -c, -t, and -x options process MPE
attributes
...
So I stand corrected, partially. Note the absense of the -A flag in
the man page. To be frank, I've never used the help command before,
always man.
>
>So, the -A feature does not seem to be undocumented (where else should
>I have known it from, if not from the documentation ;-) but it might be
>that the PDF manuals at docs.hp.com are outdated...
I ran into this problem and reported it to HP. Got a message back from
an engineer giving the -A solution, also acknowedging its
"undocumentedness". I think she said it would be documented in 6.0 or
a recent powerpatch. Hasn't happend with PP7 though. Anyway, that's
where I got it from.
Are you sure it's on you man pages. If so there must be different
versions of these as well :-(
Danny A. van Delft [log in to unmask]
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