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UNIX for Beginners Questions & Answers
Ls command options
Post 302984289 by Don Cragun on Monday 24th of October 2016 03:21:50 AM
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LEARN ABOUT DEBIAN
sethead
sethead(1) General Commands Manual sethead(1) Name sethead - Set FITS or IRAF header keyword values Synopsis sethead [-dknv][r letter] <FITS or IRAF file> kw1=val1 kw2=val2 ... kwn=valuen Description Set parameters in the header of a FITS or IRAF image. If the keywords do not already exist, they are added at the end of the header. Val- ues are assumed to be numeric if they contain no alphabetic characters and right-aligned. Otherwise they are left-aligned after the equals sign, and padded by spaces to a minimum of 8 characters. To set keywords in a list of files, substitute @<listfile> for the file names on the command line. To set 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. Lines in a keyword list file which do not contain an = are ignored. Options -h Write HISTORY line into output header with sethead version, current date and time, and names of keywords set. -k Write SETHEAD keyword into output header with sethead version, current date and time, and names of keywords set. If a SETHEAD key- word already exists, move the old value to a HISTORY line before writing the new value -n Write a new file with an added "e" before the extension. -r letter Rename existing keywords whose values are being reset by prepending the character "letter". Drop the last character if the changed keyword is already 8 characters long. -v Print confirmations of each parameter setting Web Page http://tdc-www.harvard.edu/software/wcstools/sethead.html Author Doug Mink, SAO (dmink@cfa.harvard.edu) 6 July 2001 WCSTools sethead(1)