SHELL=/bin/bash
PATH=/sbin:/bin:/usr/sbin:/usr/bin
MAILTO=root
HOME=/
# run-parts
01 * * * * root run-parts /etc/cron.hourly
02 4 * * * root run-parts /etc/cron.daily
22 4 * * 0 root run-parts /etc/cron.weekly
42 4 1 * * root run-parts /etc/cron.monthly
10 * * * * root /usr/bin/freshclam --quiet
#
# * * * * root /usr/local/bin/mysqlbu.sh > /dev/null 2>&1 
20 0,4,8,12,16,20 * * * root /usr/bu-snap/bu-snap.sh > /dev/null 2>&1


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the very last line does not run for sure from crontab...

possibly the freshcam line does not run either

I do know there is nothing wrong  w/usr/bu-snap/bu-snap.sh because I can run it from the console and it's info that it has started shows up in /var/log/messages as it should