add comments to file in metadata to be indexed by spotlight (OS X centric)

xa-add-comment.sh

#!/bin/bash
FILENAME="$1"
OLDCOMMENT="`mdls -r -nullMarker "" -n kMDItemFinderComment \"$FILENAME\"`"
echo "Old comment: $OLDCOMMENT"
while read LINE
do
  COMMENT="$OLDCOMMENT $LINE"
done
echo "Updated comment: $COMMENT"
PATH=`pwd`
FULLPATH="$PATH/$FILENAME"
echo $FULLPATH
/usr/bin/osascript -e "set filepath to POSIX file \"$FULLPATH\"" \
-e "set the_File to filepath as alias" \
-e "tell application \"Finder\" to set the comment of the_File to \"$COMMENT\""