HDFLS   (1) manpage
HDFLS
1
October 31, 1999
  • NAME
      hdfls - list basic information about an HDF file
  • SYNOPSIS
      hdfls [-o] [-l] [-d] [-v] [-g] [-s] [-h] [-t n] hdf_file
  • DESCRIPTION
      hdfls provides general information about the tags, reference numbers, and if requested, lengths of the data elements.
  • OPTIONS
      -o
      display the reference numbers in ascending order.
      -l
      long format.  Display more information about the file.
      -d
      Display offset and length information for each element in the file.
      -v
      verbose.  Display annotation and label text, along with the format triggered by the -l flag.
      -g
      Group.  List items by group.
      -s
      Special elements.  Display detailed information about special elements.
      -d
      Display offset and length information for each element in the file.
      -h
      Dump DD block information.
      -t n
      Tag.  Only list information about the specified tag. Must be followed by a tag number.
  • EXAMPLES
      A file called "aa.hdf" contains three items associated with a raster image; the image dimensions, a palette, and the raster image. To display information about the contents of this file, the following command is used.

      hdfls aa.hdf

      The following output is displayed:
      
      
      
              aa.hdf:
      
      Image Dimensions-8:                     (Raster-8): (tag 200)
      
              Ref nos: 1
      
      Image Palette-8:                        (Raster-8): (tag 201)
      
              Ref nos: 3
      
      Raster Image-8:                 (Raster-8): (tag 202)
      
              Ref nos: 1
      
      
      The following displays the same information with the length of each data element:

      hdfls -l aa.hdf

      This would result in the following information being displayed:
      
      
              aa.hdf:
      
              Image Dimensions-8:             (Raster-8)      : (tag 200)
      
              Ref no 1                4 bytes
      
              Image Palette-8:                (Raster-8)      : (tag 201)
      
              Ref no 3                768 bytes
      
              Raster Image-8:         (Raster-8)      : (tag 202)
      
              Ref no 1                120000 bytes
      
  • SEE ALSO
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