See full documentation here: github.com/pry/pry/wiki

Pry is a powerful alternative to the standard IRB shell for Ruby. It is written from scratch to provide a number of advanced features, some of these include:

Source code browsing (including core C source with the pry-doc gem)
Documentation browsing
Live help system
Open methods in editors (edit-method Class#method)
Syntax highlighting
Command shell integration (start editors, run git, and rake from within Pry)
Gist integration
Navigation around state (cd, ls and friends)
Runtime invocation (use Pry as a developer console or debugger)
Exotic object support (BasicObject instances, IClasses, ...)
A Powerful and flexible command system
Ability to view and replay history
Many convenience commands inspired by IPython and other advanced REPLs

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