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An re-packaging of the Rex library included in the Metasploit Framework for use by non-Metasploit applications. Originally created by Jacob Hammack and made official by the Rapid7 development team. The upstream of this package is the lib/rex subdirectory of

Note that prior to version 2.0.0, the 'rex' gem was an unrelated library developed by Aaron Paterson (@tenderlove).

For users of the prior library (a lexical scanner generator), set your Gemfile to something like the following:

gem 'rex', '< 2.0.0'

This package replaces the librex gem.

$ gem install rex