{"image_url":null,"categories":[],"html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fblog.kyanny.me%2Fentry%2F2022%2F03%2F17%2F234228\" title=\"logfmt \u5f62\u5f0f\u306e\u30ed\u30b0\u306e\u30ad\u30fc\u3092\u4e00\u89a7\u3059\u308b - @kyanny&#39;s blog\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","blog_title":"@kyanny's blog","title":"logfmt \u5f62\u5f0f\u306e\u30ed\u30b0\u306e\u30ad\u30fc\u3092\u4e00\u89a7\u3059\u308b","type":"rich","published":"2022-03-17 23:42:28","provider_name":"Hatena Blog","height":"190","version":"1.0","width":"100%","author_url":"https://blog.hatena.ne.jp/a666666/","author_name":"a666666","url":"https://blog.kyanny.me/entry/2022/03/17/234228","blog_url":"https://blog.kyanny.me/","provider_url":"https://hatena.blog","description":"grep -Po '\\S+(?==)' \u8981 GNU grep\u3002(?==) \u306f\u80af\u5b9a\u5148\u8aad\u307f\uff08lookahead\uff09\u3002= \u3092\u7d50\u679c\u304b\u3089\u9664\u5916\u3059\u308b\u305f\u3081\u3002 $ cat log.txt 2010-09-16T15:13:46.723498+00:00 heroku[router]: at=info method=GET path=\"/posts\" host=myapp.herokuapp.com\" fwd=\"204.204.204.204\" dyno=web.1 connect=1ms service=18ms status=200 bytes=975 $ cat log.txt | grep -Po '\\S+\u2026"}