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Top Forums Shell Programming and Scripting How to extract fields containing specific strings? Post 302955744 by magnus29 on Monday 21st of September 2015 08:46:01 AM
Old 09-21-2015
RedHat How to extract fields containing specific strings?

Hello

I have a log file with thousands of lines like below

Code:
Sep 21 13:02:52 lnxtst01 kernel: New TCP in: IN=eth0 OUT= MAC=00:1a:4b:50:b7:32:00:08:e3:ff:fc:04:08:00 SRC=10.184.46.4 DST=10.162.139.21 LEN=60 TOS=0x00 PREC=0x00 TTL=59 ID=52961 DF PROTO=TCP SPT=55688 DPT=22 WINDOW=5840 RES=0x00 SYN URGP=0
Sep 21 13:03:03 lnxtst01 kernel: New TCP out: IN= OUT=eth0 SRC=10.162.139.21 DST=10.161.8.2 LEN=83 TOS=0x00 PREC=0x00 TTL=64 ID=4306 DF PROTO=UDP SPT=60328 DPT=53 LEN=63
Sep 21 13:03:03 lnxtst01 kernel: New TCP out: IN= OUT=eth0 SRC=10.162.139.21 DST=10.199.10.61 LEN=60 TOS=0x00 PREC=0x00 TTL=64 ID=6954 DF PROTO=TCP SPT=50865 DPT=8089 WINDOW=14600 RES=0x00 SYN URGP=0

How can i extract the fields containing SRC, DST, SPT & DPT strings. I could have used awk '{print $n}' if they are in fixed column but sometimes their column number getting changed.

Please advise, thanks
 

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