I have tons of radio show recordings, which all automatically have the date they were recorded in the filename, as so:
Reelin and Rockin with Z and D -[2008-10-18].mp3. However, for a podcast, I want the actual creation/modification date to reflect the date of the show. Unfortunately, whenever I actually get around to editing the audio (to cut out previous/following DJs), the date does not reflect the date it was recorded.
I now have 50 or so files with the incorrect dates, and would like this to be automatic at some point anyway. So I figured out how to write a Bash shell script (which can be run via an Automator plug-in) to set the dates correctly using the filename. So now I can just Control-click on the files and choose the script from the Automator section of the contextual menu. (And now I can tweak it to use as a Folder Action, to run automatically when I save the edited audio file!)
Here's the shell script:
for f in "$@"
do
if [ -n "$f" ]; then
fullpath=$f
else
echo "No filename specified"
echo "Usage: KCSB-SetDate <filename>"
fi
fname=`basename "${fullpath}"`
year=`echo $fname | cat | awk -F - '{print $2}' | awk -F [ '{print $2}'`
month=`echo $fname | cat | awk -F - '{print $3}'`
day=`echo $fname | cat | awk -F - '{print $4}' | awk -F ] '{print $1}'`
fulltime="${year}${month}${day}0000"
touch -t "$fulltime" "${fullpath}"
done
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