First, the goods: http://jeffgeiger.com/cron/ (Source available for download from that page.)
This little app parses your crontab and generates a gantt chart of the task time line. It uses the twzCronChart class. I basically took their example and modified it to:
- Accept input via an html textarea.
- Parse out the comments and blank lines.
- Show a corresponding list of which cron line corresponds to which “Task”.
I’ll update this post if I make more changes.