[chuckadams]

I believe one of the major distro lines (redhat or debian, I forget which) uses systemd-cron, where cron is just a thin wrapper around systemd. You get more power from writing the unit files directly, but if all you ever need is a simple cron job, you have the old interface still available.

[MathMonkeyMan]

Yep, I use this for a @reboot job and a few regular jobs on my home server. I use user crontabs, so I can get around the "unknown shell/path/etc." by prefixing every job with

    /some/shell -l myjob.sh

or sometimes

    . ~/.profile && cd /some/where && ./job >>cron.log 2>&1