tf@dell-ubuntu:/var/log/cron-apt$ sudo  /usr/sbin/cron-apt
tf@dell-ubuntu:/var/log/cron-apt$ ls -lsa
insgesamt 12
4 drwxr-xr-x  2 root root   4096 Mär 28 11:43 .
4 drwxrwxr-x 14 root syslog 4096 Mär 28 11:03 ..
4 -rw-------  1 root root    822 Mär 28 11:43 log
tf@dell-ubuntu:/var/log/cron-apt$ cat log 
cat: log: Keine Berechtigung
tf@dell-ubuntu:/var/log/cron-apt$ sudo cat log 
CRON-APT RUN [/etc/cron-apt/config]: Mon Mar 28 11:43:38 CEST 2016
CRON-APT ACTION: 0-update
CRON-APT LINE: /usr/bin/apt-get -o quiet=1 update -o quiet=2
CRON-APT ACTION: 3-download
CRON-APT LINE: /usr/bin/apt-get -o quiet=1 autoclean -y
Reading package lists...
Building dependency tree...
Reading state information...
CRON-APT LINE: /usr/bin/apt-get -o quiet=1 dist-upgrade -d -y -o APT::Get::Show-Upgraded=true
Reading package lists...
Building dependency tree...
Reading state information...
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
CRON-APT ACTION: 4-install
CRON-APT LINE: /usr/bin/apt-get -o quiet=1 dist-upgrade -y -o APT::Get::Show-Upgraded=true
Reading package lists...
Building dependency tree...
Reading state information...
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
tf@dell-ubuntu:/var/log/cron-apt$