ipgrep - ipv4 grep-like tool

ipgrep is a simple IPv4 grep-like tool. It can be used to filter lines in log files matching IPv4's in a specific column.

Features

• multiple matching.
• CIDR matching (IPv4 with mask).
• gzip io support.

Command line

• -n CIDR network. Defaults to 0.0.0.0.
• -t number of threads. Defaults to 1.
• -c column to filter. Defaults to 1.
• -z enable gzip flag.
• -i input file. Defaults to stdin.
• -o output file. Defaults to stdout.

Build

Install go compiler and then run:

go build ipgrep.go

Install

Place the binary in one of yours binary path.

cp ipgrep /usr/local/bin

Usage

Filter lines with 10.0.0.0/8 at the 1^st column in /var/log/apache/access.log:

ipgrep -i /var/log/apache/access.log -c 1 -n 10.0.0.0/8

Filter lines with 10.0.0.0/24 and 10.0.12.0/24 at the 1^st column in /var/log/apache/access.log:

ipgrep -i /var/log/apache/access.log -c 1 -n '10.0.0.0/24 10.0.12.0/24'

Filter lines in /var/log/apache/access.log.gz to stdout:

ipgrep -z -i /var/log/apache/access.log -c 1 -n 10.0.0.0/8 | gzip -c -d

Filter lines in /var/log/apache/access.log.gz to /var/log/apache/intranet_access.log.gz:

ipgrep -z -i /var/log/apache/access.log.gz -o /var/log/apache/intranet_access.log.gz -c 1 -n 10.0.0.0/8

Version

0.1.0 according to http://semver.org/.

License

The MIT License (MIT)

Copyright (c) 2015 Vinícius Tinti

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

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