15 lines
619 B
Text
15 lines
619 B
Text
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grepcidr can be used to filter a list of IP addresses against one
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or more Classless Inter-Domain Routing (CIDR) specifications, or
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arbitrary networks specified by an address range. As with grep,
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there are options to invert matching and load patterns from a file.
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grepcidr is capable of comparing thousands or even millions of IPs
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to networks with little memory usage and in reasonable computation
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time.
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grepcidr has endless uses in network software, including: mail
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filtering and processing, network security, log analysis, and many
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custom applications.
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Author: Jem Berkes
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WWW: http://www.pc-tools.net/unix/grepcidr/
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