linux-syslog

SYSLOGBASE2 (?:%{SYSLOGTIMESTAMP:timestamp}|%{TIMESTAMP_ISO8601:timestamp8601}) (?:%{SYSLOGFACILITY} )?%{SYSLOGHOST:logsource} %{SYSLOGPROG}:
SYSLOGPAMSESSION %{SYSLOGBASE} (?=%{GREEDYDATA:message})%{WORD:pam_module}\(%{DATA:pam_caller}\): session %{WORD:pam_session_state} for user %{USERNAME:username}(?: by %{GREEDYDATA:pam_by})?

CRON_ACTION [A-Z ]+
CRONLOG %{SYSLOGBASE} \(%{USER:user}\) %{CRON_ACTION:action} \(%{DATA:message}\)

SYSLOGLINE %{SYSLOGBASE2} %{GREEDYDATA:message}

# IETF 5424 syslog(8) format (see http://www.rfc-editor.org/info/rfc5424)
SYSLOG5424PRI (?:\<%{NONNEGINT}\>)
SYSLOG5424SD (?:\[%{DATA}\]+|-)

SYSLOG5424LINE %{SYSLOG5424PRI:syslog5424_pri}%{NONNEGINT:syslog5424_ver} (%{TIMESTAMP_ISO8601:syslog5424_ts}|-) (%{HOSTNAME:syslog5424_host}|-) (%{WORD:syslog5424_app}|-) (%{WORD:syslog5424_proc}|-) (%{WORD:syslog5424_msgid}|-) %{SYSLOG5424SD:syslog5424_sd} %{GREEDYDATA:syslog5424_msg}