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Re:Crontab.guru – cron schedule expression editor by FillardMillmore on Thursday October 03, 2019 @06:14PM (#21152826)
I think both have their use cases. For quick and dirty things (like manual logging/system performance), cron works just fine and is quicker to set up. For tasks that require dependencies or have to happen at very specific points in time (like immediately after the network services are started), systemd is more suited to the task.

There are of course quite a few people who dislike systemd for justifiable reasons (but I doubt it receives the disdain that SELinux does), here's a starting point:

https://ihatesystemd.com/

That said, I very much like systemd and I hope it isn't going anywhere. I think it's improved on a lot of things from the SysVinit days and I hope and believe that its shortcomings will be addressed and improved in the future.

Re:Crontab.guru – cron schedule expression editor by theamk on Thursday October 03, 2019 @08:41PM (#21153829)
My problem with cron for short tasks is that pretty often I forget to add logging and/or locking. And then machine runs out of resources because of all the parallel jobs, and there aren’t even any logs.