I have crontabs for many machines, and wanted to see what started when, and to ensure load on the database server would be fine. Is there a tool that either converts crontab entries to iCal, or a tool that directly does visualization?
I don't have a great cron specific answer for this but in case its helpful there are alternative schedulers which give you more information about the running jobs from a central view, something like Cisco's Tidal Scheduler
来源：https://stackoverflow.com/questions/9183796/is-there-a-tool-that-allows-visualization-of-crontab-entries