several scripts (e.g. tetex and tmpwatch) are placed in
/etc/cron.daily but I cannot find any evidence that they
ever get executed.
the format of /etc/crontab and /etc/cron.d/* is not
documented. there is just a dead reference to crontab(5) in
Also I want to say that I would prefer logging to be done
Both tetex.cron and tmpwatch scripts use tmpwatch(8) which does not
log its actions, so no evidence will be left around.
man -S 5 crontab is your friend. /usr/bin/run-parts is used by the
system crontab, /etc/crontab, to run the scripts in /etc/cron.daily
Your suggestion about logging to syslogd will be passed on.