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 pdf(4)                                                               pdf(4)

      pdf - Product Description File

      A Product Description File describes product files contained in the
      HP-UX operating system.  It consists of a file containing a single
      line entry for each file described, where each entry contains the
      following fields:


      Fields are separated by a colon (:), and contain the information

           pathname       Absolute pathname of the file (starts with /).  If
                          pathname is preceded by ?, it is an optional file
                          that may or may not be present on the system.

           owner          Symbolic or numeric ID of the owner of the file.

           group          Symbolic or numeric ID of the group of the file.

           mode           Symbolic representation of file type and
                          permission information as displayed by the ls -l

           size           Size of the file in bytes.  In the case of device
                          special files, it is the major/minor number.
                          Directory sizes are not recorded.

           links          Number of hard links to pathname.

           version        Numeric value of the revision of the file.
                          Commands supporting PDFs determine this value by
                          invoking the what command on the file and
                          searching for a revision number (see what(1)).  If
                          no revision is found, ident invoked (see
                          ident(1)).  The version number recorded is the
                          first one encountered.  If no version number is
                          found, the field is empty.

           checksum       Result of the application of the Ethernet (and
                          hence IEEE 802.3) CRC checksum algorithm to the

 Hewlett-Packard Company            - 1 -   HP-UX Release 11i: November 2000

 pdf(4)                                                               pdf(4)

                          file's contents.

           linked_to      File to which pathname is linked, whether with a
                          hard or symbolic link.  If pathname is not a link,
                          this field is empty.

      Some commands (namely pdfdiff and pdfck) rely on the convention that
      one file in a set of hard links is considered the primary file,
      indicating no linked_to file in the PDF, while the remaining files in
      the set all indicate the primary file as the linked_to (see
      pdfdiff(1M) and pdfck(1M)).  This convention prevents double counting
      in size calculations, and allows some efficiencies in algorithms for
      checking consistency of links.

      Empty fields indicate a ``don't care'' status.  Any field except
      pathname can be empty.

      comment lines in the file begin with the percent character (%).  The
      first line of the file is always the comment:

           % Product Description File

      The second comment line is produced by the mkpdf command's -c option.
      For HP-UX files, this comment usually indicates the product name and

      Here is an example product description file:

           % Product Description File
           % fileset TEST, Release 1.0
           % total size is 160172 bytes.
           % total size is 158 blocks.

      The checksum algorithm is different than that used by the 7.0 Release
      version of the commands.

      Use of PDFs is discouraged since this functionality is obsolete and is
      being replaced with Software Distributor (see sd(4)).

      The specification of PDF is derived from an early draft proposal for

 Hewlett-Packard Company            - 2 -   HP-UX Release 11i: November 2000

 pdf(4)                                                               pdf(4)

      Bill of Materials in IEEE POSIX P1003.2 (Draft 2).  This proposal was
      later dropped from the standard.  The implementation is by HP.

      mkpdf(1M), pdfdiff(1M), pdfck(1M).

 Hewlett-Packard Company            - 3 -   HP-UX Release 11i: November 2000