[Info-vax] STARTREK.BCK Restore - How?

[Steven Schweda]

> 3. Unzipped the file, creating StarTrek.bck.

   Apparently, whoever created the zip archive failed to
include the VMS file attributes.  "unzip -bb startrek.bck"
seems to do well enough in this case (UnZip 6.00).

   Done wrong:

$ unzip -Zv startrek.zip
[...]
Central directory entry #1:
---------------------------

  startrek.bck
[...]
  The central-directory extra field contains:
  - A subfield with ID 0x5455 (universal time) and 5 data bytes.
    The local extra field has UTC/GMT modification time.
[...]

   Done right ("zip -V"):

$ unzip -Zv startrek-V.zip
[...]
Central directory entry #1:
---------------------------

  startrek.bck
[...]
  The central-directory extra field contains:
  - A subfield with ID 0x000c (PKWARE VMS) and 127 data bytes.  The first
    20 are:   e9 f1 28 d2 04 00 20 00 01 00 00 02 00 00 a0 08 00 00 9e 08.
[...]

   Without the "PKWARE VMS" extra block, you don't get the
original attributes.