{"image_url":null,"type":"rich","description":"\u3072\u3093\u6b7b\u306e\u30b5\u30fc\u30d0\uff08\u30cf\u30fc\u30c9\u30c8\u30e9\u30d6\u30eb\uff1f\u3067\u5b9a\u671f\u7684\u306b\u8b0e\u306e\u518d\u8d77\u52d5\uff09\u3092\u6b7b\u6d3b\u76e3\u8996\u3059\u308b\u3001\u5373\u5e2d\u3067\u8d77\u52d5\u3057\u3066\u3044\u308b\u304b\u3092\u78ba\u8a8d\u3059\u308b\u624b\u6bb5\u3092\u8003\u3048\u305f\u3002\u76e3\u8996\u3068\u3044\u3046\u3088\u308a\u76ee\u8996 $ watch -n1 'ping -c1 host >/dev/null && echo \"`date \\\"+%Y-%m-%d %T\\\"`: host is alive.\"' \u306a\u3093\u3068\u3001-dc\u30aa\u30d7\u30b7\u30e7\u30f3\u3092\u3064\u3051\u308c\u3070\u6b7b\u3093\u3060\u3089\u5206\u304b\u308a\u3084\u3059\u3044\u512a\u308c\u3082\u306e\uff01 $ watch -n1 -dc 'ping -c1 host >/dev/null && echo \"`date \\\"+%Y-%m-%d %T\\\"`: host is alive.\"' \u3068\u601d\u3063\u305f\u3051\u3069\u3001--differenc\u2026","published":"2011-01-16 11:22:21","blog_title":"\u4ed9\u53f0\u306e\u5c71\u5965\u3067\u81ea\u8ee2\u8eca\u306b\u4e57\u3063\u305f\u308a\u8ee2\u3093\u3060\u308a","author_url":"https://blog.hatena.ne.jp/youhey/","height":"190","url":"https://youhey.hateblo.jp/entry/20110116/1295230941","provider_url":"https://hatena.blog","blog_url":"https://youhey.hateblo.jp/","provider_name":"Hatena Blog","title":"\u5373\u5e2d\u306e\u6b7b\u6d3b\u76ee\u8996","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fyouhey.hateblo.jp%2Fentry%2F20110116%2F1295230941\" title=\"\u5373\u5e2d\u306e\u6b7b\u6d3b\u76ee\u8996 - \u4ed9\u53f0\u306e\u5c71\u5965\u3067\u81ea\u8ee2\u8eca\u306b\u4e57\u3063\u305f\u308a\u8ee2\u3093\u3060\u308a\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","version":"1.0","author_name":"youhey","categories":["\u30b5\u30fc\u30d0","\u6b7b\u6d3b\u76e3\u8996"],"width":"100%"}