{"url":"https://www.shigemk2.com/entry/ruby_manipulate_file_and_directory","type":"rich","title":"Ruby\u3067\u30d5\u30a1\u30a4\u30eb\u306e\u64cd\u4f5c\u3068\u304b\u30c7\u30a3\u30ec\u30af\u30c8\u30ea\u306e\u4e2d\u8eab\u306e\u78ba\u8a8d\u3068\u304b","published":"2016-08-05 21:30:02","provider_url":"https://hatena.blog","blog_title":"by shigemk2","author_url":"https://blog.hatena.ne.jp/shigemk2/","version":"1.0","author_name":"shigemk2","provider_name":"Hatena Blog","height":"190","width":"100%","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fwww.shigemk2.com%2Fentry%2Fruby_manipulate_file_and_directory\" title=\"Ruby\u3067\u30d5\u30a1\u30a4\u30eb\u306e\u64cd\u4f5c\u3068\u304b\u30c7\u30a3\u30ec\u30af\u30c8\u30ea\u306e\u4e2d\u8eab\u306e\u78ba\u8a8d\u3068\u304b - by shigemk2\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","image_url":null,"categories":["Ruby"],"blog_url":"https://www.shigemk2.com/","description":"\u30d5\u30a1\u30a4\u30eb\u306eappend file = File.open('path/to/test.txt','a') 3.times { |n| file.puts \"text #{n}\" } file.close qiita.com \u30d5\u30a1\u30a4\u30eb\u306e\u8aad\u307f\u8fbc\u307f File.open('C:\\tmp\\test.txt', 'r:utf-8') do |f| f.each_line do |line| if line.include?(\"\u4eba\") puts line end end end \u9006\u5f15\u304dRuby - \u30c7\u30a3\u30ec\u30af\u30c8\u30ea \u30c7\u30a3\u30ec\u30af\u30c8\u30ea\u306e\u4e2d\u8eab\u306e\u78ba\u8a8d p Dir::entries(\"/home/take\") code-e\u2026"}