ls /var/log/
alternatives.log       auth.log               denyhosts              faillog                installer/             prime-offload.log      syslog.2.gz            syslog.7.gz            Xorg.0.log.old
apport.log             auth.log.1             denyhosts.1            fontconfig.log         kern.log               prime-supported.log    syslog.3.gz            unattended-upgrades/   Xorg.1.log
apport.log.1           bootstrap.log          dist-upgrade/          fsck/                  kern.log.1             speech-dispatcher/     syslog.4.gz            upstart/               Xorg.1.log.old
apport.log.2.gz        btmp                   dmesg                  gpu-manager.log        lastlog                syslog                 syslog.5.gz            wtmp                   Xorg.failsafe.log
apt/                   cups/                  dpkg.log               hp/                    lightdm/               syslog.1               syslog.6.gz            Xorg.0.log             Xorg.failsafe.log.old