Clueless about how to lookup and reverse lookup IP addresses under a file!!.pls help


 
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Top Forums UNIX for Advanced & Expert Users Clueless about how to lookup and reverse lookup IP addresses under a file!!.pls help
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Old 08-26-2008
Clueless about how to lookup and reverse lookup IP addresses under a file!!.pls help

Write a quick shell snippet to find all of the IPV4 IP addresses
in any and all of the files under /var/lib/output/*, ignoring
whatever else may be in those files. Perform a reverse lookup on
each, and format the output neatly, like "IP=192.168.0.1,
hostname=poodle.lindenlab.com". (Using perl, sed, awk, etc in your
commandline is fine, but don't use the perl libraries.)
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nl-pktloc-lookup(8)					      System Manager's Manual					       nl-pktloc-lookup(8)

NAME
nl-pktloc-lookup - Lookup packet location definitions SYNOPSIS
nl-pktloc-lookup name nl-pktloc-lookup --list DESCRIPTION
nl-pktloc-lookup searches the packet location database for a matching entry. It is used to resolve packet location aliases to their defini- tion, i.e. alignment, layer, offset, and mask. OPTIONS
-h or --help Print help text to console and exit. -v or --version Print versioning information to console and exit. -l or --list List all packet location definitions. --u32=VALUE Prints the packet location definition in a special format that is understood by iproute2's u32 selector parser. It will output a u32 selector which will compare the provided value with the value specified by the packet location. Please note that due to the limitation of u32, it is not possible to use packet locations based on the link layer. nl-pktloc-lookup will print an error message in this case. Example: selector=$(nl-pktloc-lookup --u32 22 tcp.sport) tc filter add [...] u32 match $(selector) flowid 1:2 FILES
/etc/libnl/pktloc AUTHOR
Thomas Graf is the original author and current maintainer of libnl and libnl tools. Many people have contributed to it since. libnl 27 October 2010 nl-pktloc-lookup(8)