: open(ident=$0, options=Syslog::LOG_PID|Syslog::LOG_CONS, facility=Syslog::LOG_USER)
: open(ident=$0, options=Syslog::LOG_PID|Syslog::LOG_CONS, facility=Syslog::LOG_USER) { |syslog| ... }
   Ϳ줿syslog򳫤ơSyslogͣ
   󥹥󥹤֤
   ֥åդǸƤФ줿ϡ󥹥󥹤Ȥ
   ֥åƤӽФ
   syslog˳ƤRuntimeError
   ȯ롣

   ident Ϥ٤ƤΥˤĤ̻ҤǡɤΥץफ
   줿ʤΤ̤뤿˻Ȥ롣
   options  facility ˤĤƤ
   Syslog::Constants 򻲾ȡ

      :
        sl = Syslog.open('ftpd', Syslog::LOG_PID | Syslog::LOG_NDELAY,
                         Syslog::LOG_FTP)

