http://sn.1w6.org/file/mk-20150523T050522-g5fruzm.html
still breaking my head over how to find out what (if anything) happened to my cron jobs; finally http://bencane.com/2011/11/02/did-my-cronjob-run/ gave me a clue: Hal (ASUSTOR NAS) has /etc/rsyslog.conf which has the line '#cron.* -/var/log/cron' - and this: '*.info;mail.none;authpriv.none;cron.none -/var/log/messages' aha! never mind enabling syslog when cron logging is doubly disabled; there is also the fact that 'crontab' is a busybox command here so options may be (even) more limited... off to experiment more...