Show AWS cron schedule.

USAGE:

  curl cronplan.in -d '5 0 * * ? *'

  curl cronplan.in/15 -d '*/5 10 ? * FRI *'

  curl cronplan.in -G --data-urlencode 'e=5 0 * * ? *'

  e.g. https://cronplan.in/15?e=*/5+10+?+*+FRI+*

cron expr spec: https://docs.aws.amazon.com/AmazonCloudWatch/latest/events/ScheduledEvents.html#CronExpressions

implemented by https://github.com/winebarrel/cronplan