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Top Forums UNIX for Dummies Questions & Answers BASH: Change alias to script to add a task Post 302488871 by SilversleevesX on Tuesday 18th of January 2011 03:40:39 PM
Old 01-18-2011
MySQL Found another way to do it.

I appreciate the suggestions. Likely as not I'll be coming up with some scripts very much like this one in the near future, so I'll keep this thread bookmarked.

What I failed to mention is, while I write the filenames I want into the "homeperm" or "curl -o" command, I usually paste in the source URLs from the clipboard of whatever OS I happen to be using. This gave me a bit of a headache just using $1 as input from the line, as curl only saw the filename as I typed it and didn't have anything for a URL. It wasn't until I echo'd what curl was getting for input that I gleaned what I was doing wrong.

Then I thought, "If there's a $1, shouldn't there be a $2? Single spaces are seen by BASH as a break, if not a delimiter, aren't they?" So I tried this line near the top of the script:
Code:
echo -e "$1 $2"

and invoked the script (with a standby alias, "homecourt"). Sure enough, the URL printed to stdout right after the filename as sure as dinner follows lunch. cUrl downloaded the file, and the code I had written to annotate the dates ran smooth as melted butter.

Here's the final script.
Code:
#!/bin/bash
actiondate=$(/usr/bin/date)
echo -e "$1 $2 $actiondate"
clockdate=$(date '+%d %B, %Y.')
myfile=$1
myurl=$2
curl -o $myfile $myurl
fulldate=$(stat -c %y $myfile)
shortdate=${fulldate%.*}
exiv2 -kM"set Exif.Image.DateTimeOriginal Ascii $shortdate" $myfile
exiv2 -kM"set Iptc.Application2.SpecialInstructions String Downloaded $clockdate" $myfile
exiv2 -kM"set Exif.Image.DocumentName Ascii $myurl" $myfile
echo -ne "File $myfile downloaded and annotated with date and time.\n\n"

Thanks again for the suggestions.

BZT
 

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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)
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