I export ASA logs to Redhat Linux using syslog. On the ASA sending side this looks like:
logging enable
logging timestamp
logging buffer-size 40960
logging trap informational
! facility number is Unix local6
logging facility 22
! syslog server interface and IP here
logging host SYSLOG-INTERFACE www.xxx.yyy.zzz
On the Redhat Linux 6.x receiving side (rsyslog) this looks like:
$ModLoad imudp
$UDPServerRun 514
local6.* /var/log/asa/asa.log
-- Jim Leinweber, WI State Lab of Hygiene