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)