gethead1

Usage

Overview

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.

Options

-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

Web Page

http://tdc-www.harvard.edu/software/wcstools/gethead.html