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Parent = {
  hoge = 1
}

function Parent:new (o)
  o = o or {}
  setmetatable(o, self)
  self.__index = self
  return o
end

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find . -name "*.xml" -print0 | xargs -0 ruby -i -p -e '$_.gsub! %r{hoge}, "fuga"'

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find . -name *.txt -print0 | xargs -0 ruby -i -p -e '$_.gsub! %r{(foo|bar)}, %q{\1baz}'

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SET SQL_SAFE_UPDATES=0;

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#!/usr/bin/env ruby
# -*- coding: utf-8 -*-

module BaseBall
  class Batter
    include Comparable
    attr_accessor :box, :at_box, :hit, :name
    def initialize arg
      @box = arg[:box]
      @at_box = arg[:at_box]

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 convert input.jpg -resize 1024x1024\> -size 1024x1024 xc:white +swap -gravity center -composite output.jpg

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 cat hoge.log | awk '{print $5}' | cut -c 14-15 | sort | uniq -c
#awkは無条件で5番目を出力
#cut は14から15文字目
#sortはuniqueが前後しかunique化しないから必要。

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find . -name "*.html" | xargs sed -e 's/hoge/fuga/g' -i ''

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awk '{print $1}' access_log | sort | uniq -c | sort -n | tail -5

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require_once 'Benchmark/Timer.php';
 
$t = new Benchmark_Timer();
$t->start ();
$t->setMarker( 't1' );
for($i=0;$i<10000;$i++){
    // 処理
}
$t->setMarker('m2');
$t->stop();