What does last dot in the file permission attribute mean?
Solution 1:
.means an SELinux ACL. (+means a general ACL.)
Source, more info: What does the dot mean at the end of -rw-r--r--? How do you set it with chmod? on Super User
Solution 2:
From
info coreutils 'ls invocation'under LinuxGNU `ls' uses a `.' character to indicate a file with an SELinux security context, but no other alternate access method. A file with any other combination of alternate access methods is marked with a `+' character.
Reference: The Meaning of the Dot - Stack Overflow