{"provider_name":"Hatena Blog","published":"2026-08-12 00:00:00","title":"\u3010Linux\u3011if\u6587(test\u30b3\u30de\u30f3\u30c9)\u306e\u4f7f\u3044\u65b9\uff5c\u30d5\u30a1\u30a4\u30eb\u3084\u30c7\u30a3\u30ec\u30af\u30c8\u30ea\u306e\u5b58\u5728\u78ba\u8a8d\u30fb\u6761\u4ef6\u5206\u5c90","blog_title":"\u30e9\u30f3\u30c9ML","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fml-rand-note.hatenablog.com%2Fentry%2Flinux%2Fif-test-command\" title=\"\u3010Linux\u3011if\u6587(test\u30b3\u30de\u30f3\u30c9)\u306e\u4f7f\u3044\u65b9\uff5c\u30d5\u30a1\u30a4\u30eb\u3084\u30c7\u30a3\u30ec\u30af\u30c8\u30ea\u306e\u5b58\u5728\u78ba\u8a8d\u30fb\u6761\u4ef6\u5206\u5c90 - \u30e9\u30f3\u30c9ML\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","description":"if\u6587\u306e\u57fa\u672c\u7684\u306a\u4f7f\u3044\u65b9 test\u30b3\u30de\u30f3\u30c9\u3068\u306f\uff1f \u57fa\u672c\u69cb\u6587 []\u3068\u306e\u9055\u3044 if\u6587\u306b\u3088\u308b\u6761\u4ef6\u5206\u5c90 \u30d5\u30a1\u30a4\u30eb\u30fb\u30c7\u30a3\u30ec\u30af\u30c8\u30ea\u306e\u5224\u5b9a\u30aa\u30d7\u30b7\u30e7\u30f3 \u6570\u5024\u6bd4\u8f03\u306e\u30aa\u30d7\u30b7\u30e7\u30f3 AND\u30fbOR\u6761\u4ef6 \u53c2\u8003 if\u6587\u306e\u57fa\u672c\u7684\u306a\u4f7f\u3044\u65b9 test\u30b3\u30de\u30f3\u30c9\u3068\u306f\uff1f test\u30b3\u30de\u30f3\u30c9\u306f\u3001\u6307\u5b9a\u3057\u305f\u6761\u4ef6\u304c\u771f(True)\u304b\u507d(False)\u304b\u3092\u5224\u5b9a\u3059\u308b\u30b3\u30de\u30f3\u30c9\u3067\u3059\u3002 \u5224\u5b9a\u7d50\u679c\u306f\u753b\u9762\u306b\u8868\u793a\u3055\u308c\u305a\u3001\u7d42\u4e86\u30b9\u30c6\u30fc\u30bf\u30b9\u3068\u3057\u3066\u8fd4\u3055\u308c\u307e\u3059\u3002 \u6761\u4ef6\u304c\u771f\uff1a\u7d42\u4e86\u30b9\u30c6\u30fc\u30bf\u30b9 0 \u6761\u4ef6\u304c\u507d\uff1a\u7d42\u4e86\u30b9\u30c6\u30fc\u30bf\u30b9 1 test\u30b3\u30de\u30f3\u30c9\u306e\u7d50\u679c\u3092\u753b\u9762\u8868\u793a\u3057\u305f\u3044\u5834\u5408\u306f\u3001echo $?\u3092\u4f7f\u3044\u307e\u3059\u3002 \u4e3b\u306bif\u6587\u306e\u5206\u5c90\u6761\u4ef6\u3092\u66f8\u304f\u305f\u3081\u306b\u4f7f\u7528\u3055\u308c\u307e\u3059\u3002 # sample.txt\u304c\u3042\u308b\u3053\u3068\u2026","type":"rich","provider_url":"https://hatena.blog","author_name":"round-rand","url":"https://ml-rand-note.hatenablog.com/entry/linux/if-test-command","image_url":null,"version":"1.0","blog_url":"https://ml-rand-note.hatenablog.com/","height":"190","width":"100%","categories":["Linux"],"author_url":"https://blog.hatena.ne.jp/round-rand/"}