Мой Audit.log больше не выводил ничего, в то время как команда 'dmesg' выводила содержимое Audit.log. Может ли кто-нибудь сказать мне, почему?

ls -l

total 24616
-rw------- 1 root root       2 May  6 22:36 audit.log
-r-------- 1 root root 6291639 Apr  1 11:40 audit.log.1
-r-------- 1 root root 6291598 Mar  5 05:30 audit.log.2
-r-------- 1 root root 6291596 Feb  5 23:20 audit.log.3
-r-------- 1 root root 6291623 Jan  9 16:01 audit.log.4

dmesg

type=1103 audit(1559178849.757:401955): user pid=14728 uid=0 auid=500 ses=66540 msg='op=PAM:setcred acct="root" exe="/usr/bin/sudo" hostname=? addr=? terminal=/dev/pts/4 res=success'
type=1105 audit(1559178849.758:401956): user pid=14728 uid=0 auid=500 ses=66540 msg='op=PAM:session_open acct="root" exe="/usr/bin/sudo" hostname=? addr=? terminal=/dev/pts/4 res=success'
type=1101 audit(1559179201.849:401957): user pid=14922 uid=0 auid=500 ses=66212 msg='op=PAM:accounting acct="root" exe="/usr/sbin/crond" hostname=? addr=? terminal=cron res=success'
type=1103 audit(1559179201.849:401958): user pid=14922 uid=0 auid=500 ses=66212 msg='op=PAM:setcred acct="root" exe="/usr/sbin/crond" hostname=? addr=? terminal=cron res=success'
type=1006 audit(1559179201.849:401959): pid=14922 uid=0 old auid=500 new auid=0 old ses=66212 new ses=66541
type=1105 audit(1559179201.850:401960): user pid=14922 uid=0 auid=0 ses=66541 msg='op=PAM:session_open acct="root" exe="/usr/sbin/crond" hostname=? addr=? terminal=cron res=success'
type=1104 audit(1559179201.866:401961): user pid=14922 uid=0 auid=0 ses=66541 msg='op=PAM:setcred acct="root" exe="/usr/sbin/crond" hostname=? addr=? terminal=cron res=success'