# rkhunter --rwo -c
Warning: Suspicious file types found in /dev:
         /dev/shm/pulse-shm-2234434091: data
         /dev/shm/org.chromium.Chromium.shmem.0C645DA3A50EA56381A6CA5114170FB7E4914C35._service_shmem: data
         /dev/shm/pulse-shm-1073975474: data
         /dev/shm/pulse-shm-2984597639: data
         /dev/shm/mono-shared-1000-shared_fileshare-steallab-Linux-x86_64-40-12-0: data
         /dev/shm/mono-shared-1000-shared_data-steallab-Linux-x86_64-328-12-0: data
         /dev/shm/mono.3012: data
         /dev/shm/pulse-shm-3768073395: AmigaOS bitmap font
         /dev/shm/pulse-shm-2478715298: data
         /dev/shm/ecryptfs-steal-Private: ASCII text
         /dev/shm/pulse-shm-2280414878: data
Warning: Hidden directory found: /etc/.java
Warning: Hidden directory found: /dev/.udev
Warning: Hidden directory found: /dev/.initramfs

One or more warnings have been found while checking the system.
Please check the log file (/var/log/rkhunter.log)