1dfits(1)                    General Commands Manual                   dfits(1)
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NAME

6       dfits - display FITS file header information
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SYNOPSIS

9       dfits [-x xtnum] <list>
10       dfits [-x xtnum] -
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DESCRIPTION

13       dfits  displays  FITS header informations on stdout. Header information
14       can be found in the main header only (default), in  extensions,  or  in
15       both.   See  the  -x  option  below.   dfits  accepts multi-file input.
16       'dfits -' expects single file  data  coming  from  stdin.   dfits  also
17       accepts  now  'HDR' files. These are identified from the fact that they
18       contain a line feed in one of the 80 first characters.
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OPTIONS

21       -x xtnum
22              Specifies the extension to print out.  Extensions  are  numbered
23              starting  from 1. If this option is not specified, only the main
24              header is printed out. If this  option  specifies  an  extension
25              that does not exist, nothing is printed out.
26              Specify  0 as extension number to get a print of the main header
27              plus all extension headers.
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29       Examples :
30       dfits *.fits
31       dfits *.fits | grep NAXIS3
32       gzip -d < star.fits.gz | dfits - | more
33       dfits -x 0 *.fits
34       dfits -x 3 *.fits
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SEE ALSO

37       fitsort can be combined with dfits output to sort out keyword values of
38       a group of FITS files.
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FILES

41       Files shall all comply with FITS format
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45                                  30 Mar 2000                         dfits(1)