Narnach

# Ruby 1.8.6p111
# ruby1.9 is 1.9.1 from macports
# jruby latest head from github
# macruby is 0.3.1 from the .zip on their website
# rubinius is latest head from github

narnach@narnachbook ~/Development $ ruby speed.rb && ruby1.9 speed.rb && jruby speed.rb && macruby speed.rb && rbx speed.rb
      user     system      total        real
define_method :one  0.990000   0.000000   0.990000 (  1.001891)
define_method :two  0.980000   0.010000   0.990000 (  1.000110)

Narnach

#!/usr/bin/env ruby
# Random alphanumeric password generator
# Takes one parameter, which is the password length
# Forces the minimum length to be 10 or more
#
CHARS = (0..9).to_a + ('a'..'z').to_a + ('A'..'Z').to_a
class << CHARS
  def rand
    self[Kernel.rand(size)]
  end

Narnach

#!/usr/bin/env ruby
# Command of the day
# Picks a random executable from your path until it finds one with a manpage.
# Use this to learn about some of the really obscure yet really useful scripts that are already on your system.

files = ENV["PATH"].split(":").uniq.compact.map { |path|
  Dir.glob(File.join(path,'*')).select {|file| File.file?(file) && File.executable?(file)}
}.flatten.compact.uniq

cotd = File.basename(files[rand(files.size)])

Narnach

#!/usr/bin/env ruby
require 'rubygems'
require 'active_support'

class John
end

j_c = John.class_eval do
  def hi
    'hi'

Narnach

#!/usr/bin/env ruby
# BuildGems
# Created by Wes Oldenbeuving, copyright 2009, licensed under MIT LICENSE.
#
# For a git project, build the gems for all gem tag releases.
# The assumptions made are the following:
# - Version tags have the format 'N.N', 'N.N.N', etc... Only digits and dots.
# - There is a 'rake gem' task that builds the gem for the checked out version
# - Gems are located in pkg/*.gem
# - You want to copy all created gems to ~/gems/ after creating them.

Narnach

#!/bin/sh
# Usage: s2b.sh branchname
# Easily switch between branches and their databases for Rails projects.
# Checks out given branch and copies the branch's database.yml to the active database.yml
# Outputs a small list of databases being used.
# Make sure you have set up your branch's database.yml in #{RAILS_ROOT}/config/database.#{branchname}.yml
git checkout $1 && cp config/database.$1.yml config/database.yml
databases=`grep --colour=auto database config/database.yml | grep -v ^# | sed s/database\:// | tr -d '\012' | sed -E s/^\ +\|\ +$// | sed -E s/\ +/,\ /g`
echo "Using databases: $databases"

Narnach

#!/usr/bin/env ruby
# cleanpath - Cleanup your $PATH!
#
# Reads the current $PATH and outputs a version without duplicate entries.
# It is useful as a last line in ~/.profile:
#   export PATH=`/path/to/cleanpath`
path = ENV['PATH']
clean_path = path.split(":").uniq.join(":")
puts clean_path

Narnach

s1 = {:host=>'foo', :user => 'foobar'}
s2 = {:host=>'bar', :user => 'foobar'}
s3 = {:host=>'baz', :user => 'foobar'}
s4 = {:host=>'moo', :user => 'foobar', :options => {:password => 'barfoo'}}

def gate(s, s2, opts={})
  gw = Net::SSH::Gateway.new(s[:host], s[:user], {:port => 22}.merge(opts))
  gw_port = gw.open(s2[:host], s2[:port])
  yield(gw_port)
ensure

Narnach

require 'rubygems'
require 'net/ssh/gateway'
s1 = {:host=>'foo', :user => 'foobar', :options => {:password => 'barfoo', :port => 2221}}
s2 = {:host=>'bar', :user => 'foobar', :options => {:password => 'barfoo', :port => 2222}}
s3 = {:host=>'baz', :user => 'foobar', :options => {:password => 'barfoo', :port => 2223}}
s4 = {:host=>'moo', :user => 'foobar', :options => {:password => 'barfoo', :port => 2224}}

gw = Net::SSH::Gateway.new(s[:host], s[:user], s[:options)
gw_port = gw.open(s2[:host], s2[:port])
gw2 = Net::SSH::Gateway.new(s2[:host], s2[:user], s[:options].merge({:port => gw_port}))

Narnach

#!/usr/bin/env ruby
# eachfile.rb - Execute a command for each file
def help
  puts <<-HELP
Syntax: #{$0} [option] "COMMAND" File1 [File2] .. [FileN]
  The command is executed for each of the specified files.
  FILE in the command is substituted with the name of each file.
  If there is no FILE in command, the filename is given as parameter instead.
  When no files are provided, all files in the current directory are used.