{"provider_name":"Hatena Blog","title":"\u623b\u308a\u5024\u3092\u53d6\u5f97\u3057\u3066\u623b\u308a\u5024\u306b\u3059\u308b","author_url":"https://blog.hatena.ne.jp/iww/","blog_title":"\u63ee\u767a\u6027\u306e\u30e1\u30e2\uff12","provider_url":"https://hatena.blog","type":"rich","version":"1.0","author_name":"iww","categories":["perl"],"blog_url":"https://iww.hateblo.jp/","url":"https://iww.hateblo.jp/entry/20101006/exit","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fiww.hateblo.jp%2Fentry%2F20101006%2Fexit\" title=\"\u623b\u308a\u5024\u3092\u53d6\u5f97\u3057\u3066\u623b\u308a\u5024\u306b\u3059\u308b - \u63ee\u767a\u6027\u306e\u30e1\u30e2\uff12\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","width":"100%","height":"190","image_url":null,"description":"#!/usr/bin/perl exit system( \"/bin/ping -w1 -c1 hoge\" ); $ ./hoge $ echo $? 0\u306a\u3093\u3067\u3082\u3044\u3044\u304b\u3089\u30a8\u30e9\u30fc\u53d6\u5f97\u3057\u3088\u3046\u3068\u601d\u3063\u305f\u3051\u3069\u3053\u308c\u3067\u623b\u308a\u5024\u304c\u53d6\u5f97\u3067\u304d\u306a\u304b\u3063\u305f\u3002 system()\u306e\u623b\u308a\u5024\u306e\u4e0a\u4f4d8\u30d3\u30c3\u30c8\u306b system()\u5185\u3067\u8d77\u52d5\u3057\u305f\u30d7\u30ed\u30b0\u30e9\u30e0\u306e\u623b\u308a\u5024\u304c\u5165\u3063\u3066\u3044\u308b\u3002 exit()\u3067\u30b7\u30a7\u30eb\u306b\u8fd4\u3055\u308c\u308b\u623b\u308a\u5024\u306f \u547c\u3073\u51fa\u3057\u5074\u3067\u306f\u4e0b\u4f4d8\u30d3\u30c3\u30c8\u3057\u304b\u53d6\u5f97\u3067\u304d\u306a\u3044\u3002 \u306a\u306e\u3067\u30018\u30d3\u30c3\u30c8\u53f3\u30b7\u30d5\u30c8\u3057\u3066\u304b\u3089\u8fd4\u3059\u3002 #!/usr/bin/perl exit system( \"/bin/ping -w1 -c1 hoge\" )>>8; $ ./hoge \u2026","published":"2010-10-06 00:00:00"}