jekyll-git date

# add date: field to every post in a directory, using the last git commit date for that post
for f in * ; do
  echo $f 
  d=`git log -n 1 --date=format:'%Y-%m-%d %H:%M:%S' $f | grep Date | cut -c 9-`
  sed -i -e '/^title:/a\
date: "$d"
' "$f" 
done