As root, run 'crontab -e' and add that line to the end (without the vertical bars).
Explanation of numbers at start of line: "man 5 crontab" -- Linux Tips: https://www.tiger-computing.co.uk/category/techtips/ -- Next meeting: BEC, Bournemouth, Tuesday, 2019-04-02 20:00 Check to whom you are replying Meetings, mailing list, IRC, ... http://dorset.lug.org.uk/ New thread, don't hijack: mailto:dorset@mailman.lug.org.uk