{"url":"https://takuya-1st.hatenablog.jp/entry/2024/04/22/000000","version":"1.0","author_url":"https://blog.hatena.ne.jp/takuya_1st/","blog_title":"\u305d\u308c\u30de\u30b0\u3067\uff01","type":"rich","width":"100%","blog_url":"https://takuya-1st.hatenablog.jp/","provider_name":"Hatena Blog","image_url":null,"title":"Grep \u306b'\\K' \u3068\u3044\u3046\u4fbf\u5229\u306a\u66f8\u5f0f\u304c\u3042\u308b\u3002","description":"Grep \u306b'\\K' \u3068\u3044\u3046\u4fbf\u5229\u306a\u66f8\u5f0f\u304c\u3042\u308b\u3002 look behind \u3092\u4f7f\u3063\u3066\u3001\u5fc5\u8981\u306a\u5834\u6240\u3092\u53d6\u308a\u51fa\u3059\u3053\u3068\u304c\u3067\u304d\u308b\u3002 (<?=xxx) \u3092\u4f7f\u3063\u305f\u5834\u5408 ip -o addr show dev br0 | grep -oP '(?<=inet )[\\d.]+' \\K \u3092\u4f7f\u3063\u305f\u5834\u5408 ip -o addr show dev br0 | grep -oP 'inet \\K[\\d.]+' \\K \u306e\u66f8\u5f0f\u306b\u3064\u3044\u3066 \\K \u3088\u308a\u524d\u306f\u30de\u30c3\u30c1\u7d50\u679c\u306b\u542b\u307e\u308c\u306a\u3044\uff08\u30de\u30c3\u30c1\u306f\u30c1\u30a7\u30c3\u30af\u3055\u308c\u308b\uff09 echo abcdefg | grep -oP 'abcd\\Kefg' \\K\u3092\u3064\u3051\u308b\u3053\u3068\u3067\u3001\u30de\u30c3\u30c1\u8a66\u884c\u304c\u884c\u308f\u308c\u308b\u304c\u3001\u30de\u30c3\u30c1\u6587\u5b57\u5217\u306b\u306f\u53d6\u2026","height":"190","published":"2024-04-22 00:00:00","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Ftakuya-1st.hatenablog.jp%2Fentry%2F2024%2F04%2F22%2F000000\" title=\"Grep \u306b&#39;\\K&#39; \u3068\u3044\u3046\u4fbf\u5229\u306a\u66f8\u5f0f\u304c\u3042\u308b\u3002 - \u305d\u308c\u30de\u30b0\u3067\uff01\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","author_name":"takuya_1st","provider_url":"https://hatena.blog","categories":["linux","bash","grep"]}