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gethead - Print FITS or IRAF header keyword values
gethead [-hptv] [-d pathname] [-n num] <FITS or IRAF file> kw1 kw2 ... kwn
Print values of the specified keywords from the given image header. By default they are all listed on one line, separated by spaces. The -v flag causes the keyword names and values to be printed, one keyword per line. To read keywords from a list of files, substitute @<listfile> for the file names on the command line. To read a lot of keywords, put them, one per line, in a file and substitute @<keylistfile> on the command line. If two @ commands are present, the program will figure out which contains file names and which contains keywords.
-a
List file name even if keywords are not found
-d
Root directory for input files (default is cwd)
-e
Output keyword=value's on one line per file
-f
Never print filenames (default is to print them if more than one)
-g
Output keyword=value's on one line per keyword
-h
flag causes the keyword names to be printed at top of columns.
-n
Number of decimal places in numeric output
-o
OR conditions instead of ANDing them
-p
Print full pathnames of files
-t
flag causes the output to be in tab-separated tables with keyword column headings.
-u
Always print ___ if keyword not found, event if only one keyword in search
-v
Print output as <keyword>=<value>, one per line
http://tdc-www.harvard.edu/software/wcstools/gethead.html
Doug Mink, SAO ([email protected])