{"provider_url":"https://hatena.blog","blog_title":"oknknic\u306e\u65e5\u8a18","title":"UNIX\u30b3\u30de\u30f3\u30c9 \u6f14\u7b97\u7cfb\u30b3\u30de\u30f3\u30c9","provider_name":"Hatena Blog","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Foknknic.hatenadiary.org%2Fentry%2F20121201%2F1354339777\" title=\"UNIX\u30b3\u30de\u30f3\u30c9 \u6f14\u7b97\u7cfb\u30b3\u30de\u30f3\u30c9 - oknknic\u306e\u65e5\u8a18\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","categories":["UNIX","Linux"],"author_name":"oknknic","url":"https://oknknic.hatenadiary.org/entry/20121201/1354339777","type":"rich","image_url":null,"version":"1.0","blog_url":"https://oknknic.hatenadiary.org/","width":"100%","height":"190","description":"\u300cUNIX \u30b7\u30a7\u30eb\u5909\u6570\u3068\u74b0\u5883\u5909\u6570\u306b\u3064\u3044\u3066 - oknknic\u306e\u65e5\u8a18\u300d\u306b\u5f15\u304d\u7d9a\u304dUNIX\u30b3\u30de\u30f3\u30c9\u30cd\u30bf\u3002 \u4eca\u56de\u306f\u6f14\u7b97\u7cfb\u30b3\u30de\u30f3\u30c9\u3002 expr - \u5f0f\u306e\u8a55\u4fa1 \u95a2\u4fc2\u6f14\u7b97\u3001\u6570\u5024\u6f14\u7b97\u3001\u6587\u5b57\u5217\u6f14\u7b97\u3092\u7528\u3044\u305f\u5f0f\u306e\u8a55\u4fa1\u3092\u884c\u3046\u3002 \u4f8b $ expr 1 + 1 2 $ expr 2 \\* 10 20 test - \u6761\u4ef6\u5f0f\u3092\u8a55\u4fa1\u3057\u3001\u7d50\u679c\u30920/1\u3067\u7d42\u4e86\u30b3\u30fc\u30c9\u306b\u8a2d\u5b9a \u30d5\u30a1\u30a4\u30eb\u5f62\u5f0f/\u30d1\u30fc\u30df\u30c3\u30b7\u30e7\u30f3/\u7279\u6027\u306e\u30c6\u30b9\u30c8\u3001\u6587\u5b57\u5217\u306e\u30c6\u30b9\u30c8\u3001\u6570\u5024\u306e\u30c6\u30b9\u30c8\u3092\u884c\u3044\u3001\u7d50\u679c\u30920/1\u3067\u7d42\u4e86\u30b3\u30fc\u30c9\u306b\u8a2d\u5b9a\u3002 \u4f8b $ test hoge = hoge $ echo $? 0 $ test hoge = hage $ echo $? 1 $ bc - \u4efb\u610f\u5236\u2026","published":"2012-12-01 14:29:37","author_url":"https://blog.hatena.ne.jp/oknknic/"}