## Required

# install
sudo gem install utility_belt

# settings for ~/.irbrc
require 'rubygems'
require 'utility_belt'
UtilityBelt::Themes.background(:light) #optional

## Now you can play in irb

# Interactively edit IRB code in TextMate
mate

# read from clipboard
MacClipboard.read

# write to clipboard
MacClipboard.write 'some text to be pasted elsewhere'

# review history
h # 'history' also works, but who wants to type?

# re-play last command
h!

# re-play arbitrary command from history
h! 123

# save history to some file
history_write('/path/to/file')

# find class name
grep_classes("num")
#=> ["Bignum", "Fixnum", "Numeric", "REXML::SyncEnumerator"]

# find method name
"foo".grep_methods("pretty")
#=> ["pretty_inspect", "pretty_print_instance_variables", ... ]

# google for whatever's in clipboard
google

# arbitrary google search
google singleWord
google 'multiple words'

## Required

# install
sudo gem install utility-belt

# settings for ~/.irbrc
require 'rubygems'
require 'utility_belt'
UtilityBelt::Themes.background(:light) #optional

## Now you can play in irb

# Interactively edit IRB code in TextMate
mate

# read from clipboard
MacClipboard.read

# write to clipboard
MacClipboard.write 'some text to be pasted elsewhere'

# review history
h # 'history' also works, but who wants to type?

# re-play last command
h!

# re-play arbitrary command from history
h! 123

# save history to some file
history_write('/path/to/file')

# find class name
grep_classes("num")
#=> ["Bignum", "Fixnum", "Numeric", "REXML::SyncEnumerator"]

# find method name
"foo".grep_methods("pretty")
#=> ["pretty_inspect", "pretty_print_instance_variables", ... ]

# google for whatever's in clipboard
google

# arbitrary google search
google singleWord
google 'multiple words'

## Required

# install
sudo gem install utility-belt

# settings for ~/.irbrc
require 'rubygems'
require 'utility_belt'
UtilityBelt::Themes.background(:light) #optional

## Now you can play in irb

# Interactively edit IRB code in TextMate
edit mate

# read from clipboard
MacClipboard.read

# write to clipboard
MacClipboard.write 'some text to be pasted elsewhere'

# review history
h # 'history' also works, but who wants to type?

# re-play last command
h!

# re-play arbitrary command from history
h! 123

# save history to some file
history_write('/path/to/file')

# find class name
grep_classes("num")
#=> ["Bignum", "Fixnum", "Numeric", "REXML::SyncEnumerator"]

# find method name
"foo".grep_methods("pretty")
#=> ["pretty_inspect", "pretty_print_instance_variables",
"pretty_print_inspect", "pretty_print", "pretty_print_cycle"]

# google for whatever's in clipboard
google

# arbitrary google search
google singleWord
google 'multiple words'

http://utilitybelt.rubyforge.org/usage.html

Note: most of these will be available to the shell and Rails' console too.

Irb power tricks with Wirble & Utility-Belt

class, textmate, google, ruby, osx

Ruby