{"author_name":"liaoyuan","author_url":"https://blog.hatena.ne.jp/liaoyuan/","blog_title":"Going Faraway","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fliaoyuan.hatenablog.jp%2Fentry%2F2018%2F02%2F27%2F000127\" title=\"Bash\u3067\u30d1\u30a4\u30d7\u3055\u308c\u305f\u30b3\u30de\u30f3\u30c9\u306e\u51fa\u529b\u3092\u5909\u6570\u306b\u5272\u308a\u5f53\u3066\u3001\u540c\u6642\u306b\u623b\u308a\u5024\u3092\u8abf\u3079\u308b\u65b9\u6cd5 - Going Faraway\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","published":"2018-02-27 00:01:27","url":"https://liaoyuan.hatenablog.jp/entry/2018/02/27/000127","blog_url":"https://liaoyuan.hatenablog.jp/","height":"190","width":"100%","description":"\u3050\u3050\u3063\u3066\u3082\u3042\u307e\u308a\u60c5\u5831\u304c\u51fa\u3066\u3053\u306a\u304b\u3063\u305f\u306e\u3067\u30e1\u30e2\u3002Bash\u3067 \u300c$?\u300d\u3092\u4f7f\u3048\u3070\u5b9f\u884c\u3057\u305f\u30b3\u30de\u30f3\u30c9\u306e\u623b\u308a\u5024\u304c\u53d6\u5f97\u3067\u304d\u308b\u306e\u306f\u6709\u540d\u3002 $ false; echo $? 1 # false\u306e\u623b\u308a\u5024 Bash\u306e\u5834\u5408\u3001\u30d1\u30a4\u30d7\u3055\u308c\u305f\u30b3\u30de\u30f3\u30c9\u306e\u623b\u308a\u5024\u306f \u300cPIPESTATUS\u300d\u3068\u3044\u3046\u914d\u5217\u306b\u683c\u7d0d\u3055\u308c\u308b\u3053\u3068\u3082\u3001\u305d\u308c\u306a\u308a\u306b\u77e5\u3089\u308c\u3066\u3044\u308b\u3068\u601d\u3046\u3002 $ true | true | false $ echo ${PIPESTATUS[0]} ${PIPESTATUS[1]} ${PIPESTATUS[2]} 0 0 1 # true, true, false\u306e\u623b\u308a\u5024 \u3068\u3053\u308d\u304c\u3001\u30d0\u30c3\u30af\u30af\u30aa\u30fc\u30c8\u3084 \u300c$()\u300d \u306b\u3088\u308b\u30b3\u30de\u30f3\u30c9\u7f6e\u63db\u306e\u4e2d\u2026","provider_url":"https://hatena.blog","provider_name":"Hatena Blog","title":"Bash\u3067\u30d1\u30a4\u30d7\u3055\u308c\u305f\u30b3\u30de\u30f3\u30c9\u306e\u51fa\u529b\u3092\u5909\u6570\u306b\u5272\u308a\u5f53\u3066\u3001\u540c\u6642\u306b\u623b\u308a\u5024\u3092\u8abf\u3079\u308b\u65b9\u6cd5","image_url":null,"version":"1.0","categories":[],"type":"rich"}