{"title":"ruby\u3067tail -f\u307f\u305f\u3044\u306a\u51e6\u7406","url":"https://e-c-e-t.hatenadiary.org/entry/20110526/p1","type":"rich","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fe-c-e-t.hatenadiary.org%2Fentry%2F20110526%2Fp1\" title=\"ruby\u3067tail -f\u307f\u305f\u3044\u306a\u51e6\u7406 - \u8a18\u9332\uff08e_c_e_t\uff09\" 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,"provider_name":"Hatena Blog","blog_title":"\u8a18\u9332\uff08e_c_e_t\uff09","description":"\u5fc5\u8981\u306b\u8feb\u3089\u308c\u3001\u66f8\u3044\u3066\u307f\u305f\u3002 #!/usr/bin/env ruby # -*- coding: utf-8 -*- # def tail(filepath) fpointer = 0 f = open(filepath) f.seek(-32, IO::SEEK_END) # \u672b\u5c3e\u304b\u308932byte\u304b\u3089\u958b\u59cb(\u8981\u8abf\u6574) begin while true puts f.readline fpointer = f.pos end rescue EOFError f.close unless f.closed? # \u66f4\u65b0\u3092\u691c\u77e5\u3059\u308b\u307e\u3067\u5f85\u3064 closetime = File.mtime(filepath)\u2026","blog_url":"https://e-c-e-t.hatenadiary.org/","width":"100%","provider_url":"https://hatena.blog","height":"190","categories":["ruby","tail"],"version":"1.0","author_url":"https://blog.hatena.ne.jp/e_c_e_t/","published":"2011-05-26 00:00:00","author_name":"e_c_e_t"}