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 lif(4)								      lif(4)




 NAME
      lif - logical interchange format description

 DESCRIPTION
      LIF (Logical Interchange Format) is a Hewlett-Packard standard mass-
      storage format that can be used for interchange of files among various
      HP computer systems.  A LIF volume contains a header (identifying it
      as a LIF volume) and a directory that defines the contents (i.e.
      files) of the volume.  The size of the directory is fixed when the
      volume is initialized (see lifinit(1)) and sets an upper bound on the
      number of files that can be created on the volume.

      HP-UX contains a set of utilities (referred to as lif*(1)) that can be
      used to:

	   +  Initialize a LIF volume (i.e. create a header and an empty
	      directory),

	   +  Copy files to and from LIF volumes,

	   +  List the contents of LIF volumes,

	   +  Remove LIF files,

	   +  Rename LIF files.

      The lif*(1) utilities are the only utilities within HP-UX where the
      internal structure of a LIF volume is known.  To the rest of HP-UX, a
      LIF volume is simply a file containing some unspecified data.  The
      term LIF volume should in no way be confused with the HP-UX notion of
      a file system volume or mountable volume.

      LIF utilities on HP-UX currently support three file types, ASCII (1),
      BINARY (-2) and BIN (-23951).

      Three copying modes are associated with these file types:

	   ASCII     If the copying mode is ASCII and an HP-UX file is being
		     copied to a LIF volume, the utility strips the trailing
		     LF (line-feed) character, and inserts two bytes of
		     record length in front of each record.  These records
		     are then written to a LIF-formatted medium.  When
		     copying a LIF ASCII file to HP-UX the two-byte record
		     length is stripped and a trailing LF is appended.
		     These records are then written to the destination.	 In
		     this mode of copying, the length of the file is
		     preserved.	 The default file type for this mode of
		     copying is ASCII (1).

	   BINARY    If the copying mode is BINARY, and an HP-UX file is
		     being copied to a LIF volume, the utility simply



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






 lif(4)								      lif(4)




		     inserts two bytes for record length in front of each
		     1-Kbyte record.  A trailing fractional block has a
		     count reflecting the number of bytes in that block.  No
		     interpretation is placed on the content of the records.
		     These records are then written to a LIF-format medium.
		     When copying a LIF file to an HP-UX file in BINARY
		     copying mode, the record lengths are stripped and the
		     content of records is directly written to the
		     destination.  In this mode of copying, the length of
		     the binary file is preserved.  The default file type
		     for this mode of copying is BINARY (-2).

	   RAW	     If the copying mode is RAW, and an HP-UX file is being
		     copied to a LIF volume, the utility simply copies the
		     raw data to the destination.  File sizes that are not
		     integer multiples of 256 bytes are padded with nulls to
		     the next higher multiple.	Therefore, file sizes are
		     not preserved.  When copying a LIF file to an HP-UX
		     file in RAW mode, the information is copied directly
		     without any interpretation placed on the content of the
		     source.  The default file type for this mode of copying
		     is BIN (-23951).

      A LIF volume can be created on any HP-UX file (either regular disk
      file or device special file) that supports random access via lseek()
      (see lseek(2)).  Do not mount the special file before using lif*(1)
      utilities.  See lifinit(1) for details.  Within a LIF volume,
      individual files are identified by 1- to 10-character file names.
      File names can consist of uppercase alphanumeric characters (A through
      Z, 0 through 9) and the underscore character (_).	 The first character
      of a LIF file name must be a letter (A through Z).  The lif*(1)
      utilities accept any file name (including illegal file names generated
      on other systems), but can only create legal names.  This means that
      files whose names contain lowercase letters can be read but not
      created.

      LIF file names are specified to the lif*(1) utilities by concatenating
      the HP-UX path name for the LIF volume followed by the LIF file name,
      separating the two with a colon (:).  For example:

	   /dev/fd.0:ABC       specifies LIF file ABC accessed via HP-UX
			       device special file /dev/fd.0.

	   myfile:ABC	       specifies LIF file ABC within HP-UX disk file
			       myfile.

      Note that this file-naming convention is applicable only for use as
      arguments to the lif*(1) utilities, and does not constitute valid path
      naming for any other use within the HP-UX operating system.





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






 lif(4)								      lif(4)




      Do not mount the special file while using lif*(1) utilities.

 SEE ALSO
      lifcp(1), lifinit(1), lifls(1), lifrename(1), lifrm(1).


















































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