Provided by: pry_0.12.2-1_all
PRY - A Reference to the PRY repl.
pry [--version] [--exec] [--no-pager] [--no-history] [--no-color] [-f] [--no-plugins] [--installed-plugins] [--simple-prompt] [--require file] [-I] [--context] [--help]
Pry is a powerful alternative to the standard IRB shell for Ruby. It is written from scratch to provide a number of advanced features.
-v --version Prints the version of Pry. -e --exec Executes argument in context before the session starts. --no-pager Disable pager for long output. --no-history Disable history loading. --no-color Disable syntax highlighting for session. -f Prevent loading of ~/.pryrc for session. --no-plugins Suppress loading of plugins. --installed-plugins List installed plugins. --simple-prompt Enable simple prompt mode (eg, >>). -r --require Require a ruby script at startup. -I Add a path to the $LOAD_PATH -c --context Start the session in the specified context. Equivalent to context.pry in a session.
~/.pryrc Personal pry initialization
Basic Usage $ pry  pry(main)>4 + 5 => 9  pry(main)> def hello_world  pry(main)* puts "Hello, World!"  pry(main)* end => nil  pry(main)> hello_world Hello, World! => nil Command Line Interaction Prefix any command you want your shell to execute with a period and pry will return the results from your shell.  pry(main)> .date Fri Nov 11 09:52:07 EST 2011 On the command line enter shell-mode to incorporate the current working directory into the Pry prompt. pry(main)> shell-mode pry main:/Users/john/ruby/projects/pry $ .cd .. pry main:/Users/john/ruby/projects $ .cd ~ pry main:/Users/john $ .pwd /Users/john pry main:/Users/john $ shell-mode pry(main)> State Navigation The cd command is used to move into a new object (or scope) inside a Pry session. When inside the new scope it becomes the self for the session and all commands and methods will operate on this new self. pry(main)> self => main pry(main)> cd Pry pry(Pry):1> self => Pry pry(Pry):1> cd .. pry(main)> The ls command is essentially a unified wrapper to a number of Ruby´s introspection mechanisms, including (but not limited to) the following methods: methods, instance_variables, constants, local_variables, instance_methods, class_variables and all the various permutations thereof. By default typing ls will return a list of just the local and instance variables available in the current context. · The -M option selects public instance methods (if available). · The -m option selects public methods. · The -c option selects constants. · The -i option select just instance variables. · The -l option selects just local variables. · The -s option modifies the -c and -m and -M options to go up the superclass chain (excluding Object). · The --grep REGEX prunes the list to items that match the regex. Source Browsing Simply typing show-method method_name will pull the source for the method and display it with syntax highlighting. You can also look up the source for multiple methods at the same time, by typing show-method method1 method2. As a convenience, Pry looks up both instance methods and class methods using this syntax, with priority given to instance methods. pry(Pry):1> show-method rep From: /Users/john/ruby/projects/pry/lib/pry/pry_instance.rb @ line 191: Number of lines: 6 def rep(target=TOPLEVEL_BINDING) target = Pry.binding_for(target) result = re(target) show_result(result) if should_print? end
Pry is primarily the work of John Mair (banisterfiend) June 2014 PRY(1)