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Top Forums Shell Programming and Scripting Extract & Manipulate continous data stream-- tcpdump Post 302897511 by delphys on Monday 14th of April 2014 12:57:47 PM
Old 04-14-2014
Thank you very much but I am not getting any output..

Code:
 tcpdump | awk '/^[0-9]*:[0-9]*/ {src=$3} match($0, /IBM-32[^.]*\.[^.]*/) { str=substr($0,RSTART,RLENGTH);\
>  ibm[str]=src FS ibm[str] } END { for (i in ibm)  { print i, ibm[i] } }'
tcpdump: WARNING: Shared: no IPv4 address assigned
tcpdump: verbose output suppressed, use -v or -vv for full protocol decode
listening on Shared, link-type EN10MB (Ethernet), capture size 65535 bytes

 

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ovs-tcpundump(1)						Open vSwitch Manual						  ovs-tcpundump(1)

NAME
ovs-tcpundump - convert ``tcpdump -xx'' output to hex strings SYNOPSIS
ovs-tcpundump < file Common options: [-h | --help] [-V | --version] DESCRIPTION
The ovs-tcpundump program reads tcpdump -xx output on stdin, looking for hexadecimal packet data, and dumps each Ethernet as a single hexa- decimal string on stdout. This format is suitable for use with the ofproto/trace command supported by ovs-vswitchd(8) via ovs-appctl(8). At least two -x or -X options must be given, otherwise the output will omit the Ethernet header, which prevents the output from being using with ofproto/trace. OPTIONS
-h, --help Prints a brief help message to the console. -V, --version Prints version information to the console. SEE ALSO
ovs-appctl(8), ovs-vswitchd(8), ovs-pcap(1), tcpdump(8), wireshark(8). Open vSwitch December 2010 ovs-tcpundump(1)
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