【树莓派】crontab的两个问题

root@raspberrypi:/# nano /etc/rsyslog.conf
……
……
###############
#### RULES ####
###############

#
# First some standard log files.  Log by facility.
#
auth,authpriv.*                 /var/log/auth.log
*.*;auth,authpriv.none          -/var/log/syslog
cron.*                          /var/log/cron.log             #去掉这一行行首的#
daemon.*                        -/var/log/daemon.log
kern.*                          -/var/log/kern.log
lpr.*                           -/var/log/lpr.log
mail.*                          -/var/log/mail.log
user.*                          -/var/log/user.log

root@raspberrypi:/# sudo  service rsyslog  restart