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Full Discussion: Extract & Manipulate continous data stream-- tcpdump
Top Forums Shell Programming and Scripting Extract & Manipulate continous data stream-- tcpdump Post 302897510 by neutronscott on Monday 14th of April 2014 12:38:08 PM
Old 04-14-2014
let's just save each "host > host" line to a variable, and print it when we find IBM-32?
i'm assuming we can find those because they start with a time vs whitespace

Code:
tcpdump | awk '
  /^[0-9]*:[0-9]*/ {src=$3}
  match($0, /IBM-32[^.]*\.[^.]*/) {
    str=substr($0,RSTART,RLENGTH)]
    ibm[str]=src,ibm[str]
  }
  END {
    for (i in ibm) print i, ibm[i]
  }
'

This uses END so you don't get an output until it's DONE which wouldn't really work for realtime output from tcpdump.

Code:
$ cat tcpdump | awk '/^[0-9]*:[0-9]*/ {src=$3} match($0, /BM-32[^.]*\.[^.]*/) { str=substr($0,RSTART,RLENGTH); ibm[str]=src FS ibm[str] } END { for (i in ibm)  { print i, ibm[i] } }'
BM-3278-2-E.CC218085 199.198.231.57.34945 199.198.231.57.58935
BM-3278-2-E.CC210147 168.108.221.122.57406 168.108.220.104.50909

some of them were missing the I in your output here
 

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LEARN ABOUT REDHAT

logdump

logdump(8)						  JFS utility - journal log dump						logdump(8)

NAME

       logdump - dump a JFS formatted device's journal log

SYNOPSIS

       logdump [ -a ] device

DESCRIPTION

       logdump dumps the contents of the journal log from the specified JFS formatted device into output file ./jfslog.dmp.

       device is the special file name corresponding to the actual device from which the journal log will be dumped (e.g.  /dev/hdb1 ).

       logdump must be run as root.

OPTIONS

       -a     Dump the entire contents of the journal log instead of just the committed transactions since the last synch point.

EXAMPLE

       Dump the entire JFS journal log from the 3rd partition of the 2nd hard disk into ./jfslog.dmp:

	      logdump -a /dev/hdb3

REPORTING BUGS

       If you find a bug in JFS or logdump, please report it via the bug tracking system ("Report Bugs" section) of the JFS project web site:
       http://oss.software.ibm.com/jfs

       Please  send  as  much  pertinent information as possible, including any logdump error messages and the complete output of running fsck.jfs
       with the -v option on the JFS device.

SEE ALSO

       xchklog(8), xchkdmp(8), mkfs.jfs(8), fsck.jfs(8), logredo(8), xpeek(8)

AUTHORS

       Barry Arndt  (barndt@us.ibm.com)
       William Braswell, Jr.

       logdump is maintained by IBM.
       See the JFS project web site for more details:
       http://oss.software.ibm.com/jfs

								 October 10, 2001							logdump(8)
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