How to cat a file , name starts with "-" ? Post: 43399

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replacekey

replacekey(1)						      General Commands Manual						     replacekey(1)

NAME

       replacekey - replace keywords in a FITS header

SYNOPSIS

       replacekey [options] <in>

DESCRIPTION

       replacekey is aimed at replacing keywords in a FITS file's header by new keywords provided by the user on the command-line.

ALGORITHM

       The  user  can provide a new_keyword, an old_keyword, a value and a comment.  first searchs for old_keyword if provided. If it finds it, it
       replaces the associated card by the new one (new_keyword=value/comment).  If old_keyword is either not found or	not  provided,	associated
       card by the new one (new_keyword=value/comment).  new_keyword has to be provided.

       Examples: You want to change the value of VALUE from 32 to 16 in myfile.fits: % replacekey -k "VALUE" -v "16" myfile.fits

       If  you	want  to  replace  the	card with the keyword OLD by "NEW = 3.14 / This is a usefull key" in myfile.fits: % replacekey -k "NEW" -v
       "3.14" -c "This is a usefull key" -K "OLD" myfile.fits

       If your do not care about the HISTORY cards you have in the header, and want to replace the first one by VALUE=32, you would do:
       % replacekey -k "VALUE" -v "32" -K "HISTORY" myfile.fits

OPTIONS

       -k or --key key
	      To provide the new keyword.

       -K or --old key
	      To provide the old keyword.

       -v or --val val
	      To provide the new value.

       -c or --com com
	      To provide the new comment.

SEE ALSO

       hierarch28 to convert HIERARCH ESO keywords to regular 8-char keywords.

FILES

       Files shall all comply with FITS format

BUGS

       Modifications are so far only possible in the main header, not in the extensions.

								    28 Oct 1999 						     replacekey(1)