{"categories":["UNIX/Linux"],"width":"100%","title":"\u30b7\u30b9\u30c6\u30e0\u30e6\u30fc\u30b6/\u4e00\u822c\u30e6\u30fc\u30b6\u5225\u30ea\u30b9\u30c8\u4f5c\u6210","url":"https://anmino.hatenadiary.org/entry/20090827/1251301978","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fanmino.hatenadiary.org%2Fentry%2F20090827%2F1251301978\" title=\"\u30b7\u30b9\u30c6\u30e0\u30e6\u30fc\u30b6/\u4e00\u822c\u30e6\u30fc\u30b6\u5225\u30ea\u30b9\u30c8\u4f5c\u6210 - \u3042\u3093\u307f\u306e\u306e\u5099\u5fd8\u9332\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","image_url":null,"author_name":"anmino","description":"declare\u30b3\u30de\u30f3\u30c9\u3067\u914d\u5217\u3092\u5ba3\u8a00\u3057\u3001/etc/passwd\u306euserid\u3068username\u3092\u30bb\u30c3\u30c8\u3002 for\u6587\u3067userid\u304c100\u4ee5\u4e0b\u3068\u4ee5\u4e0a\u306b\u5206\u3051\u3001\u305d\u308c\u305e\u308c\u30d5\u30a1\u30a4\u30eb\u306b\u66f8\u304d\u8fbc\u3080\u3002 \u30b3\u30de\u30f3\u30c91 && \u30b3\u30de\u30f3\u30c92 || \u30b3\u30de\u30f3\u30c93\u306f \u30b3\u30de\u30f3\u30c91\u304c\u771f\u306e\u5834\u5408\u30b3\u30de\u30f3\u30c92\u3092\u5b9f\u884c\u3057\u3001\u507d\u306e\u5834\u5408\u306f\u30b3\u30de\u30f3\u30c93\u3092\u5b9f\u884c\u3059\u308b\u3002 ${#username[*]}\u306f\u914d\u5217\u306b\u30bb\u30c3\u30c8\u3055\u308c\u3066\u3044\u308b\u5909\u6570\u306e\u6570\u3002 #!/usr/bin/bash declare -a username userid username=($(cut -d \":\" -f1 /etc/passwd)) userid=($(cut -d \":\" -f3 /etc/\u2026","version":"1.0","published":"2009-08-27 00:52:58","blog_title":"\u3042\u3093\u307f\u306e\u306e\u5099\u5fd8\u9332","provider_name":"Hatena Blog","provider_url":"https://hatena.blog","type":"rich","blog_url":"https://anmino.hatenadiary.org/","author_url":"https://blog.hatena.ne.jp/anmino/","height":"190"}