On Windows, UNIX, and Linux systems, ACUCOBOL-GT uses the Vision indexed file system to manage its indexed data files. For
these systems, ACUCOBOL-GT comes with an indexed file utility program called
vutil that contains several useful functions. The full name of this 32-bit utility is
vutil32, but is referred to as
vutil.
Note: Other file system interfaces have their own file utility packages. On VMS systems, for example, ACUCOBOL-GT uses the RMS file
system that is native to VMS, and the
vutil utility is not supplied. VMS-specific programs such as ANALYZE/RMS and CONVERT can be used to accomplish the same functions
that
vutil provides.
vutil provides several functions in one package. It can be used to:
- display file information (-info,
-size,
-tree)
- test file integrity (-check)
- rebuild and repair files (-rebuild)
- reset the user count (-zero)
- reset the internal revision number (-fixvers)
- extract data records (-extract)
- create empty files (-gen)
- unload data to binary or line sequential files (-unload)
- load data from binary or line sequential files (-load)
- convert other index files to Vision (-convert)
- change the maximum record size (-augment)
- recover deleted records (-deleted)
- place text in the
comment field of the header (-note)
Each of these functions is indicated by an initial keyword on the command line (preceded by a hyphen). This keyword may be
abbreviated to its first letter. The functions are designed to allow you to specify all possible task parameters up front,
so that the utility can run unattended or with a minimum of user interaction. Each function is discussed below.