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HDFLS(1) General Commands Manual HDFLS(1)

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

hdf(5)
October 31, 1999