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system/cronie.md

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+Various services from cron exist, e.g.
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+> sudo apt -y install cronie
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+start the cronie with
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+> sudo systemctl start cronie
+
+start a cron with 
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+> cron -e
+
+You can run a script with:
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+*/10 * * * * /home/pi/script.sh
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+... which would run every 10 minutes.
+
+To run something as root, do:
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+> sudo crontab -e
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+For example, you can update the database, meaning searches with 'locate' command will be faster.
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+> */30 * * * * /usr/bin/updatedb
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+
+