{"published":"2018-07-12 20:30:00","provider_name":"Hatena Blog","title":"Ruby\u304b\u3089\u30b7\u30a7\u30eb\u30b3\u30de\u30f3\u30c9\u3092\u5b9f\u884c\u3059\u308b(Kernel.#system ..etc)","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fkikeda1104.hatenablog.com%2Fentry%2F2018%2F07%2F12%2F203000\" title=\"Ruby\u304b\u3089\u30b7\u30a7\u30eb\u30b3\u30de\u30f3\u30c9\u3092\u5b9f\u884c\u3059\u308b(Kernel.#system ..etc) - kikeda1104&#39;s blog\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","height":"190","author_url":"https://blog.hatena.ne.jp/kikeda1104/","description":"\u8abf\u3079\u3066\u3044\u305f\u306e\u3067\u3001\u66f8\u3044\u3066\u3044\u304d\u307e\u3059\u3002 \u524d\u63d0 Ruby 2.2.10 \u5916\u90e8\u30b3\u30de\u30f3\u30c9\u306e\u547c\u3073\u51fa\u3057 \u5b9f\u88c5\u3067\u5229\u7528\u3057\u305f\u306f\u3001#system, #`\u3092\u5229\u7528\u3057\u3066\u3044\u3066\u3001\u30b3\u30de\u30f3\u30c9\u3092\u5b9f\u884c\u3057\u3066\u8fd4\u5374\u5024\u3001\u30b9\u30c6\u30fc\u30bf\u30b9\u306f\u7121\u8996\u3059\u308b\u30b1\u30fc\u30b9\u3068\u8fd4\u5374\u5024\u3092\u5229\u7528\u3059\u308b\u30b1\u30fc\u30b9\u3067\u5206\u3051\u3066\u4f7f\u3063\u3066\u3044\u307e\u3059\u3002 Kernel.#system \u5f15\u6570\u3092\u5916\u90e8\u30b3\u30de\u30f3\u30c9\u3068\u3057\u3066\u5b9f\u884c\u3057\u3066\u3001\u6210\u529f\u3057\u305f\u6642\u306b\u771f\u3092\u8fd4\u3057\u307e\u3059\u3002 \u5b50\u30d7\u30ed\u30bb\u30b9\u304c\u7d42\u4e86\u30b9\u30c6\u30fc\u30bf\u30b9 0 \u3067\u7d42\u4e86\u3059\u308b\u3068\u6210\u529f\u3068\u307f\u306a\u3057 true \u3092\u8fd4\u3057\u307e\u3059\u3002 \u305d\u308c\u4ee5\u5916\u306e\u7d42\u4e86\u30b9\u30c6\u30fc\u30bf\u30b9\u306e\u5834\u5408\u306f false \u3092\u8fd4\u3057\u307e\u3059\u3002 \u30b3\u30de\u30f3\u30c9\u3092\u5b9f\u884c\u3067\u304d\u306a\u304b\u3063\u305f\u5834\u5408\u306f nil \u3092\u8fd4\u3057\u307e\u3059\u3002 \u7d42\u4e86\u30b9\u30c6\u30fc\u30bf\u30b9\u306f\u5909\u6570 $? \u3067\u53c2\u7167\u3067\u304d\u307e\u3059\u3002 \u30b3\u30de\u30f3\u30c9\u3092\u5b9f\u884c\u3059\u308b\u3053\u2026","type":"rich","url":"https://kikeda1104.hatenablog.com/entry/2018/07/12/203000","width":"100%","provider_url":"https://hatena.blog","blog_title":"kikeda1104's blog","author_name":"kikeda1104","image_url":"https://cdn.user.blog.st-hatena.com/default_entry_og_image/94428665/1530603038405971","categories":["Rails","Ruby","Mac"],"version":"1.0","blog_url":"https://kikeda1104.hatenablog.com/"}