bpb-kit/home/bin/fragment-vimwiki-grep-logs

#!/bin/sh

if [ ! -z "$1" ]; then
  # Take the basename of the file passed in, i.e. something like
  # /home/brennen/notes/vimwiki/diary/2019-01-01.wiki, slice off the extension,
  # and treat it as a seed date:
  date="$(basename -s .wiki "$1")"
  date="$(basename -s .md "$date")"
  datestamp="$(date --date="$date" -I)"
else
  # No filename given, nothing to work with, just use today:
  datestamp="$(date -I)"
fi

echo '== log =='
echo
echo "<!-- exec-raw notes logs-by-date '${datestamp}' -->"
echo '<!-- end -->'