Man page - hdfls(1)

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Package: hdf4-tools
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hdf4-tools

Manual

HDFLS

NAME
SYNOPSIS
DESCRIPTION
OPTIONS
EXAMPLES
SEE ALSO

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