# apt-get install logwatch
# nano /usr/share/logwatch/default.conf/logwatch.conf
logwatch [--detail level ] [--logfile log-file-group ] [--service ser†vice-name ] [--mailto address ] [--archives] [--range range ] [--debug level ] [--filename file-name ] [--logdir directory ] [--hostname host†name ] [--hostformat host based options ] [--output output-type ] [--format report format ] [--encode encoding to use ] [--numeric] [--version] [--help|--usage]
# logwatch --detail Low --mailto email@address --service http --range today
# logwatch --detail Low --mailto email@address --service kernel --range today