hath: Hath manipulates network blocks in CIDR notation.

[ agpl, program, utils ] [ Propose Tags ]

Hath is a Haskell program for working with network blocks in CIDR notation. When dealing with blocks of network addresses, there are a few things that one usually wants to do with them:

  • Create a regular expression matching the CIDR block(s). This is because grep will throw up if you feed it CIDR.

  • Combine small blocks into larger ones. For example, if you have two consecutive /24s, they might combine into a larger /23.

  • View the result of block combination in a useful way.

  • List them.

Hath has several modes to perform these functions:

This computes a (Perl-compatible) regular expression matching the input CIDR blocks. It's the default mode of operation.
This combines small blocks into larger ones where possible, and eliminates redundant blocks. The output should be equivalent to the input, though.
Shows only the blocks that would be removed by reduce; that is, it shows the ones that would get combined into larger blocks or are simply redundant.
Shows what would change if you used reduce. Uses diff-like notation.
List the IP addresses contained within the given CIDRs.


Compute a (Perl-compatible) regular expression matching the input CIDR blocks. It's the default mode of operation.

$ echo "" | hath

Combine two /24s into a /23:

$ echo "" | hath reduced

List the addresses in

$ echo | hath listed

The command-line syntax and complete set of options are documented in the man page.


Maintainer's Corner

For package maintainers and hackage trustees


Versions [RSS] 0.0.1, 0.0.2, 0.0.3, 0.0.4, 0.0.5, 0.1.0, 0.1.1, 0.1.2, 0.2.0, 0.2.1, 0.2.2, 0.2.3, 0.3.0, 0.4.1, 0.4.2, 0.5.0
Dependencies base (>=4.9 && <5), cmdargs (>=0.10), split (>=0.2), tasty (>=0.8), tasty-hunit (>=0.8), tasty-quickcheck (>=0.8.1) [details]
License AGPL-3.0-only
Author Michael Orlitzky
Maintainer Michael Orlitzky <michael@orlitzky.com>
Category Utils
Home page http://michael.orlitzky.com/code/hath.xhtml
Source repo head: git clone http://gitweb.michael.orlitzky.com/hath.git -b master
Uploaded by MichaelOrlitzky at 2019-03-04T03:18:48Z
Distributions NixOS:0.5.0
Executables hath
Downloads 11735 total (3 in the last 30 days)
Rating 2.0 (votes: 1) [estimated by Bayesian average]
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Status Docs not available [build log]
Last success reported on 2019-03-04 [all 3 reports]