{"image_url":null,"url":"https://memo.furyutei.com/entry/20140104/1388840425","author_url":"https://blog.hatena.ne.jp/furyu-tei/","blog_url":"https://memo.furyutei.com/","author_name":"furyu-tei","type":"rich","version":"1.0","title":"Unix\u306e\u30ea\u30c0\u30a4\u30ec\u30af\u30c8\u306e\u899a\u66f8","categories":[],"provider_name":"Hatena Blog","blog_title":"\u98a8\u67f3\u30e1\u30e2","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fmemo.furyutei.com%2Fentry%2F20140104%2F1388840425\" title=\"Unix\u306e\u30ea\u30c0\u30a4\u30ec\u30af\u30c8\u306e\u899a\u66f8 - \u98a8\u67f3\u30e1\u30e2\" 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","description":"\u30ea\u30c0\u30a4\u30ec\u30af\u30b7\u30e7\u30f3\u306b\u95a2\u3057\u3066\u3001\u3053\u308c\u307e\u3067\u898b\u305f\u4e2d\u3067\u3082\u3063\u3068\u3082\u7406\u89e3\u3057\u3084\u3059\u304b\u3063\u305f\u8a18\u4e8b\u3002 UNIX\u306e\u90e8\u5c4b \u30b3\u30de\u30f3\u30c9\u691c\u7d22:\u30ea\u30c0\u30a4\u30ec\u30af\u30c8 (*BSD/Linux) command > /dev/null 2>&1 \u306e\u89e3\u91c8 $ command >/dev/null 2>&1 \u300c>dev/null\u300d\u306f\u300c1>/dev/null\u300d\u306b\u540c\u3058\u3067\u3001\u300c\u6a19\u6e96\u51fa\u529b(1)\u306e\u51fa\u529b\u5148\u3092 /dev/null \u306b\u8a2d\u5b9a\u300d\u306e\u610f\u5473 \u300c2>&1\u300d\u306f\u300c\u6a19\u6e96\u30a8\u30e9\u30fc\u51fa\u529b(2)\u306e\u51fa\u529b\u5148\u3092\u3001\u6a19\u6e96\u51fa\u529b(1)\u306e\u51fa\u529b\u5148\u3068\u540c\u3058\u3082\u306e\u306b\u8a2d\u5b9a\u300d\u306e\u610f\u5473 \u5de6\u304b\u3089\u9806\u306b\u51e6\u7406\u3055\u308c\u3001\u51fa\u529b\u5148\u304c\u6b21\u306e\u3088\u3046\u306b\u5909\u308f\u308b\u3082\u306e\u3068\u89e3\u91c8\u3059\u308b\u3002 \u30c7\u30d5\u30a9\u30eb\u30c8 >/dev/null 2>&1 \u6a19\u6e96\u51fa\u529b(1) \u753b\u9762\u2026","published":"2014-01-04 22:00:25","provider_url":"https://hatena.blog","width":"100%"}