marvin:/var/log# ls -lh auth.log*
-rw-------  1 root  wheel    77K Dec 20 14:46 auth.log
-rw-------  1 root  wheel   9.0K Dec  8 18:00 auth.log.0.bz2
-rw-------  1 root  wheel   8.4K Nov 23 15:00 auth.log.1.bz2
-rw-------  1 root  wheel   7.8K Nov 10 22:00 auth.log.2.bz2
-rw-------  1 root  wheel   8.5K Oct 30 21:00 auth.log.3.bz2
-rw-------  1 root  wheel   8.0K Oct 17 17:00 auth.log.4.bz2
-rw-------  1 root  wheel   7.5K Oct  9 11:00 auth.log.5.bz2
-rw-------  1 root  wheel   7.9K Sep 30 19:00 auth.log.6.bz2
-rw-------  1 root  wheel    12K Sep 25 03:00 auth.log.7.bz2