Where to find logs/information about unattended-upgrades (apt)?
Unattended upgrade has its own log-file in /var/log/unattended-upgrades/unattended-upgrades.log
It is policed by anacoron.
# These lines replace cron's entries
1 5 cron.daily run-parts --report /etc/cron.daily
7 10 cron.weekly run-parts --report /etc/cron.weekly
@monthly 15 cron.monthly run-parts --report /etc/cron.monthly
/var/log/dpkg.log
also /var/log/apt/history.log
Both those log files contain timestamps and descriptions if action was taken. if no action was taken there is no log.
automated updates runs from /etc/cron.daily/apt
and /etc/cron.daily/*
runs from /etc/crontab
in the early morning.