{"type":"rich","provider_url":"https://hatena.blog","height":"190","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fnemoplus.hateblo.jp%2Fentry%2F20100704%2F1278252696\" title=\" /etc/passwd \u30d5\u30a1\u30a4\u30eb\u3092\u4e00\u822c\u30e6\u30fc\u30b6\u304c\u66f4\u65b0\u3067\u304d\u308b\u7406\u7531 - \u306d\u3082\u3077\u3089\u3059\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","provider_name":"Hatena Blog","image_url":null,"categories":["lpic","Linux"],"version":"1.0","width":"100%","published":"2010-07-04 23:11:36","author_url":"https://blog.hatena.ne.jp/yamazaru_rengou/","title":" /etc/passwd \u30d5\u30a1\u30a4\u30eb\u3092\u4e00\u822c\u30e6\u30fc\u30b6\u304c\u66f4\u65b0\u3067\u304d\u308b\u7406\u7531","blog_url":"https://nemoplus.hateblo.jp/","url":"https://nemoplus.hateblo.jp/entry/20100704/1278252696","author_name":"yamazaru_rengou","blog_title":"\u306d\u3082\u3077\u3089\u3059","description":"$ ls -la /etc/passwd -rw-r--r-- 1 root root 951 2010-07-04 23:46 /etc/passwd \u30d1\u30b9\u30ef\u30fc\u30c9\u30d5\u30a1\u30a4\u30eb\u306f root \u30e6\u30fc\u30b6\u306a\u306e\u306b\u3001\u4e00\u822c\u30e6\u30fc\u30b6\u3082\u30d1\u30b9\u30ef\u30fc\u30c9\u5909\u66f4\u306f\u53ef\u80fd\u3002 $ ls -la /usr/bin/passwd -rwsr-xr-x 1 root root 28480 2007-02-27 16:53 /usr/bin/passwd passwd \u30b3\u30de\u30f3\u30c9\u306e\u6240\u6709\u8005\u306e\u30a2\u30af\u30bb\u30b9\u6a29\u306f\u300cr:\u8aad\u307f\u53d6\u308a\u6a29\u300d\u300cw:\u66f8\u304d\u8fbc\u307f\u6a29\u300d\u3068\u3001\u5b9f\u884c\u6a29\u304c\u300cx\u300d\u3067\u306f\u306a\u304f\u300cs:SUID(Set User ID)\u300d\u306b\u306a\u3063\u3066\u3044\u308b\u3002 \u30b0\u30eb\u30fc\u30d7\u3068\u305d\u306e\u4ed6\u30e6\u30fc\u30b6\u306f\u300c\u2026"}