I am using this regular expression with Kiwi Syslog to distribute messages to several destinations based on the last number of the third octet (0-4 goes one place, 5-9 goes another). "10\.\d+\.\d*[0-4]\." This doesn't work with syslog-ng, of course, but based on my research of the archives, this should do the same thing because I've escaped the "\d" match("10\.\\d+\.\\d*[0-4]\.") Nope, I get nothing. I've shortened it to just match("10\.\\d+") and still get no matching messages. This sort of works, but gives some unexpected results: match("10\.[0-9]+\.[0-9]*[0-4]\.") The match("10\.[0-9]+\.[0-9]*[0-4]\.") statement resulted in 'true' on this log message. I didn't expect a match on 10.87.48.4 from it because of the '8' as the last number of the third octet not matching '0-4' Oct 29 16:31:20 10.87.48.4 Kiwi_Syslog_Daemon Oct 29 16:31:20 10.87.48.4 MSWinEventLog 0 Security 71000 Thu Oct 29 16:31:17 2009 538 Security pos User Success Audit POS0408748 Logon/Logoff User Logoff: User Name: pos Domain: POS0408748 Logon ID: (0x0,0x4ACB69) Logon Type: 3 42921033 So, I have two questions..... What's wrong with this: match("10\.\\d+\.\\d*[0-4]\.") And why did this match("10\.[0-9]+\.[0-9]*[0-4]\.") match this Oct 29 16:31:20 10.87.48.4 Kiwi_Syslog_Daemon Oct 29 16:31:20 10.87.48.4 MSWinEventLog 0 Security 71000 Thu Oct 29 16:31:17 2009 538 Security pos User Success Audit POS0408748 Logon/Logoff User Logoff: User Name: pos Domain: POS0408748 Logon ID: (0x0,0x4ACB69) Logon Type: 3 42921033 Thanks! Phil <span style="font-size:78%;"><span style="font-family:arial;"><strong>Notice:</strong> This e-mail message and its attachments are the property of Wendy's/Arby's Group Inc. </span> <span style="font-family:arial;">or one of its subsidiaries and may contain confidential or legally privileged information intended</span> <span style="font-family:arial;">solely for the use of the addressee(s). If you are not an intended recipient, then any use, copying or</span> <span style="font-family:arial;">distribution of this message or its attachments is strictly prohibited. If you received this message in</span> <span style="font-family:arial;">error, please notify the sender and delete this message entirely from your system.</span></span>