logger -is -p "$facility"."$level" -t $0 message

# facility
       auth       security/authorization messages
       authpriv   security/authorization messages (private)
       cron       clock daemon (cron and at)
       daemon     system daemons without separate facility value
       ftp        ftp daemon
       local0 - local7	reserved for local use
       lpr        line printer subsystem
       mail       mail subsystem
       news       USENET news subsystem
       syslog     messages generated internally by syslogd(8)
       user       generic user-level messages (default)
       uucp       UUCP subsystem

# level
       emerg      system is unusable
       alert      action must be taken immediately
       crit       critical conditions
       err        error conditions
       warning    warning conditions
       notice     normal, but significant, condition (default)
       info       informational message
       debug      debug-level message