+listcourses() {
+ ls -1 ${_DATA}/ical/*ics |while read file; do
+ icstime="$(sed -rn 's:^DTSTART\:(TZID=.*\:)?([0-9]{4})([0-9]{2})([0-9]{2})T([0-9]{2})([0-9]{2})([0-9]{2})Z?\r$:\2-\3-\4 \5\:\6\:\7:p' "$file")"
+ echo "$(date -d "$icstime" "+%u %H%M%S")\t$file"
+ done |sort |sed -r 's:^.*\t(.*/)([^/]+)$:\2:'
+}
+