'string'.methods.length   ### 161
('string'.methods - Object.new.methods).length   ## 107

[].methods.length         ### 167
([].methods - Object.new.methods).length   ## 113

([].methods & 'string'.methods).length    ## 76
([].methods & 'string'.methods - Object.new.methods).length  ## 22

[].methods & 'string'.methods - Object.new.methods
[:[], :[]=, :concat, :<<, :insert, :length, :size, :empty?, :index, :rindex, :reverse, :reverse!, :delete, :replace, :clear, :include?, :slice, :slice!, :+, :*, :count, :partition]

irb(main):026:0> 'string'.methods - [].methods
=> [:casecmp, :%, :bytesize, :match, :succ, :succ!, :next, :next!, :upto, :chr, :getbyte, :setbyte, :byteslice, :to_i, :to_f, :to_str, :dump, :upcase, :downcase, :capitalize, :swapcase, :upcase!, :downcase!, :capitalize!, :swapcase!, :hex, :oct, :split, :lines, :bytes, :chars, :codepoints, :prepend, :crypt, :intern, :to_sym, :ord, :start_with?, :end_with?, :scan, :ljust, :rjust, :center, :sub, :gsub, :chop, :chomp, :strip, :lstrip, :rstrip, :sub!, :gsub!, :chop!, :chomp!, :strip!, :lstrip!, :rstrip!, :tr, :tr_s, :squeeze, :tr!, :tr_s!, :delete!, :squeeze!, :each_line, :each_byte, :each_char, :each_codepoint, :sum, :rpartition, :encoding, :force_encoding, :b, :valid_encoding?, :ascii_only?, :unpack, :encode, :encode!, :to_r, :to_c, :>, :>=, :<, :<=, :between?]

irb(main):031:0> [].methods - 'string'.methods
=> [:to_a, :to_ary, :at, :fetch, :first, :last, :push, :pop, :shift, :unshift, :each, :each_index, :reverse_each, :find_index, :join, :rotate, :rotate!, :sort, :sort!, :sort_by!, :collect, :collect!, :map, :map!, :select, :select!, :keep_if, :values_at, :delete_at, :delete_if, :reject, :reject!, :zip, :transpose, :fill, :assoc, :rassoc, :-, :&, :|, :uniq, :uniq!, :compact, :compact!, :flatten, :flatten!, :shuffle!, :shuffle, :sample, :cycle, :permutation, :combination, :repeated_permutation, :repeated_combination, :product, :take, :take_while, :drop, :drop_while, :bsearch, :pack, :entries, :sort_by, :grep, :find, :detect, :find_all, :flat_map, :collect_concat, :inject, :reduce, :group_by, :all?, :any?, :one?, :none?, :min, :max, :minmax, :min_by, :max_by, :minmax_by, :member?, :each_with_index, :each_entry, :each_slice, :each_cons, :each_with_object, :chunk, :slice_before, :lazy]

def process

end

re 'open-uri'
require 'nokogiri'

def process(id, date)
	host = 'http://seavers.iteye.com'
	cookie = ''      #IO.read('cookie.txt')
	agent = 'Mozilla/5.0 (X11; Linux i686) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/30.0.1599.14 Safari/537.36'

	html = open(host + '/admin/blogs/' + id + '/edit', 'User-Agent'=>agent, 'Cookie'=>cookie).read
	doc = Nokogiri::HTML(html)

	title = doc.search('#blog_title').attr('value').to_s
	text = doc.search('#editor_body').text
	category = doc.search('#blog_category_list').attr('value').to_s
	tag = doc.search('#blog_tag_list').attr('value').to_s
	

	content = text
		.gsub('[size=xx-large]', '#')
		.gsub('[size=x-large]', '##')
		.gsub('[size=large]', '###')
		.gsub('[size=medium]', '####')
		.gsub('[size=small]', '')
		.gsub('[size=x-small]', '')
		.gsub('[size=xx-small]', '')
		.gsub('[/size]', '')
		.gsub(/\[url=(.*)\](.*)\[\/url\]/, '[\2](\1)')
		.gsub('[url]', '').gsub('[/url]', '')
		.gsub('[b]', '*').gsub('[/b]', '*')
		.gsub('[list]', '').gsub('[/list]', '')
		.gsub('[b]', '*').gsub('[/b]', '*')
		.gsub('[*]', '* ')
		.gsub('[code]', '```').gsub('[ne/code]', '```')
		.gsub(/\[code="(.*)"\]/, '```')


	filename = date[0..9] + '-' + id + '.markdown'
	File.open('blog/' + filename, 'w') { |file|
		file.puts '---'
		file.puts 'layout: post'
		file.puts 'title: "' + title.to_s + '"'
		file.puts 'date: ' + date + ':00 +0800'
		file.puts 'comments: true'
		file.puts 'categories:'
		file.puts '- ' + category.to_s
		file.puts 'tags:'
		tag.split(',').each {|x|
			file.puts '- ' + x
		}
		file.puts '---'

		file.puts ''
		file.puts content 
	}

end

def spider(page)
	agent = 'Mozilla/5.0 (X11; Linux i686) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/30.0.1599.14 Safari/537.36'

	url = 'http://seavers.iteye.com/?page='+page.to_s
	html = open(url, 'User-Agent'=>agent)

	doc = Nokogiri::HTML(html)
	doc.search('.blog_main').each {|x|
		id = x.search('h3 a').attr('href').text[/[0-9]+/, 0]
		date = x.search('.blog_bottom .date').text
		puts id + "\t" + date
		process(id, date)
	}

	return doc.search('.pagination a.next_page').length == 0
end

##process('1416013', '2013-12-31 14:01')
(1..100).each {|page|
	break if spider(page)
}

#encoding:utf-8
require 'open-uri'
require 'nokogiri'

def spide
    url = "http://home.photo.qq.com/index.php?mod=activity&act=detail&category_id=1"

    html = open(url).read
    doc = Nokogiri::HTML(html)

    list = doc.search('.photo-list li img')
    list.each { |x|
        src = x.attr('src')
        puts src.gsub(/400/, '800');
    }
end

spide

create external table hive_table (
	id int,
	name string,
	category string,
	tag string
)
PARTITIONED BY (pt string) 
ROW FORMAT DELIMITED
   FIELDS TERMINATED BY ',' 
STORED AS TEXTFILE

select id,name,count(*),
	count(distinct category),collect_set(category),
	count(distinct tag),collect_set(tag)
from hive_table
where pt='20131213'
group by id,name

select id,name,category_id
from hive_table
lateral view explode(split(category, ',')) category_table as category_id
where pt='20131213'

select h.*
from hive_table h
left semi join
girl_names g
on h.name = g.name

	vi ~/.bash_aliases

repeat() {
    n=100
    s=1

    while true; do
        arg=$1
        if [ "$arg" == "-n" ]; then
            n=$2
            shift
            shift
        elif [ "$arg" == "-s" ]; then
            s=$2
            shift
            shift
        else
            break
        fi
    done

    while [ $((n -= 1)) -ge 0 ]; do
        "$@"
        sleep $s
    done
}

	source ~/.bash_aliases

	repeat ls -l
	repeat date
	repeat iostat
	repeat -n 3 curl 'http://www.lianghaijun.com'
	repeat -n 3 -s 300 curl 'http://www.lianghaijun.com'
	repeat -n 3 -s 0.5 sh -c "curl -I -s 'http://www.lianghaijun.com' | head -1"

seavers@seavers:/home/admin$ id
uid=1000(seavers) gid=1000(seavers) groups=1000(seavers),4(adm),24(cdrom),27(sudo),30(dip),46(plugdev),109(lpadmin),124(sambashare)

	cat /etc/group

	groups seavers

	usermod seavers -a -G admin 

	http://<host>:<port>/blog-update

   nohup ruby hook.rb &

	git pull
	rake generate

	rake preview

	location /blog/ {
		alias ~/octopress/public/;
	}

	rake deploy

  cat data.txt | sed 's/abc/def/g'

  cat data.txt | sed '/^$/d'

  cat data.txt | sed '1d'

  cat data.txt | sed 's/^.//g'

sed '1,3d' file //删除1-3行
sed '/[Aa]bc/p' file //打印包含Abc或者abc的行
sed '/ABC/d' //删除包含ABC的行
sed '/ABC/!d' //不删除包含ABC的行
sed '5,$d' //从第五行到最后一行全部删除
sed 1q  //显示第一行
sed 's/$/.../g' //每行的最后面添加 ...
sed 's/d.(sk)/1&/g' //满足d*sk的单词,在单词前添加sk
sed 's/<[^>]*>//g' //去除html标签
sed '/ABC/a123' //在包含ABC的行后面添加一行数值为123的行
sed '/ABC/i123' //跟a不同的是i是插入当前行的前面
sed '/ABC/c123' //包含ABC的行将更改为123
sed '/ABC/{n;s/123/ABC/g}' //精确匹配包含ABC的下一行,将123全部替换成ABC
sed '/ABC/{s/A/a/}' //在包含ABC的行将A替换成a
sed -e '/ABC/h' -e '$g' //将包含ABC的行复制,在最后一行添加.
sed -e '/ABC/{h;d}' -e '/123/G' //将包含ABC的行复制并删除,在包含123的行后添加.
g等于在当前行覆盖,G是在符合条件的行后新增加一行.
sed 's/^/ /g' //每行前面增加一个空格
sed 's/.(.)$/*1/' //将倒数第二位换成*
sed '/ABC/!s/1/*/g' //在不包含ABC的行里,将所有的1替换成*
sed 's/1|2|3/*/g' //在GNU里将不管是1或2或者是3替换成*