Hi All, OS-Type=Sun-OS 5.8 Sparc9 Processor Can I grep the previous 4 lines and next 4 lines of a matched pattern(context grep)? For example here we need to monitor logs of live traffic.The data obtained from "tail -f LiveTrafficData.log" looks something like this:- Sender-ip=10.123.32.34 //Useful Info Junk Parameter=blah Blah Parameter=more blah Packet-state=start //Useful Info Policy-type=test-value-policy //Useful Info Some more blah blah blah user-profile-type=host user-location=njs-234 //Useful Info .... ... Similar sort of repetitive data -- Now here the lines which are of concern to me are only policy-type,packet-state, service-ip and user-location,i.e., I need to ascertain sender-ip and user-location only and only when Policy-type=<desired pattern> AND Packet-state=<desired pattern2>. Also note it is from live traffic, so we need to work on "tail -f" of whatever log we are getting. Any help is welcome. Thanks and Regards. BTW,I forgot to tell on this OS,there is no "grep -A num" or "cgrep" or "vmsgrep".Also it is live data caught by "tail -f",so need to work on Standard Input and not any file.

The context script was discussed in this thread: http://www.computing.net/answers/un...