{"id":281,"date":"2024-09-11T12:04:57","date_gmt":"2024-09-11T04:04:57","guid":{"rendered":"http:\/\/znl.pub\/?p=281"},"modified":"2024-09-11T12:06:17","modified_gmt":"2024-09-11T04:06:17","slug":"%e6%8e%8c%e6%8f%a1grep%ef%bc%9a%e6%8f%90%e5%8f%96%e4%b8%a4%e4%b8%aa%e6%8c%87%e5%ae%9a%e5%ad%97%e7%ac%a6%e4%b8%b2%e4%b9%8b%e9%97%b4%e7%9a%84%e5%86%85%e5%ae%b9","status":"publish","type":"post","link":"https:\/\/znl.pub\/?p=281","title":{"rendered":"\u638c\u63e1grep\uff1a\u63d0\u53d6\u4e24\u4e2a\u6307\u5b9a\u5b57\u7b26\u4e32\u4e4b\u95f4\u7684\u5185\u5bb9"},"content":{"rendered":"\n<p>\u5728\u65e5\u5e38\u5de5\u4f5c\u4e2d\uff0c\u5904\u7406\u6587\u672c\u6570\u636e\u662f\u4e00\u9879\u5e38\u89c1\u4efb\u52a1\u3002\u800c <code>grep<\/code> \u547d\u4ee4\u4f5c\u4e3a\u6587\u672c\u5904\u7406\u4e2d\u7684\u5229\u5668\uff0c\u4e0d\u4ec5\u53ef\u4ee5\u7528\u6765\u641c\u7d22\u6307\u5b9a\u6a21\u5f0f\u7684\u6587\u672c\uff0c\u8fd8\u53ef\u4ee5\u5999\u7528\u4e8e\u63d0\u53d6\u6307\u5b9a\u524d\u7f00\u548c\u540e\u7f00\u4e4b\u95f4\u7684\u5185\u5bb9\u3002\u672c\u6587\u5c06\u4ecb\u7ecd\u5982\u4f55\u5229\u7528 <code>grep<\/code> \u547d\u4ee4\u7684\u5f3a\u5927\u529f\u80fd\uff0c\u7cbe\u51c6\u63d0\u53d6\u76ee\u6807\u524d\u7f00\u548c\u540e\u7f00\u4e4b\u95f4\u7684\u6587\u672c\u5185\u5bb9\uff0c\u8ba9\u4f60\u7684\u6587\u672c\u5904\u7406\u5de5\u4f5c\u66f4\u52a0\u9ad8\u6548\u548c\u4fbf\u6377\u3002<\/p>\n\n\n\n<p>\u4e3e\u4e2a\u6817\u5b50\uff1a<br>\u5047\u5982\u6211\u4eec\u6709\u4e00\u6279html\u6587\u4ef6\uff0c\u4f46\u662f\u8fd9\u4e2ahtml\u6587\u4ef6\u7684\u7f16\u7801\u4e0d\u4e00\uff08\u76f4\u63a5cat\u67e5\u770b\u4f1a\u6709\u4e71\u7801\uff09\uff0c\u56e0\u6b64\u9700\u8981\u5c06\u8fd9\u4e9b\u6587\u4ef6\u90fd\u7edf\u4e00\u8f6c\u7801\u4e3aUTF8\u3002\u6211\u4eec\u77e5\u9053\u5728\u4f7f\u7528iconv \u8f6c\u7801\u65f6\u5fc5\u987b\u6307\u5b9a\u6b63\u786e\u7684&#8211;from-code\uff0c\u6070\u5de7\u5462\u6bcf\u4e2ahtml\u6587\u4ef6\u4e2d\u90fd\u6709\u5199\u5f53\u524d\u9875\u9762\u7684\u7f16\u7801\uff0c\u7c7b\u4f3c\u8fd9\u6837\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>&lt;meta http-equiv=\"Content-Type\" content=\"text\/html; charset=gb2312\" \/><\/code><\/pre>\n\n\n\n<p>\u8981\u5982\u4f55\u53d6\u5230 <mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-vivid-red-color\">gb2312 <\/mark>\uff0c\u6216\u8005\u8bf4\u5982\u4f55\u63d0\u53d6\u5230  <mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-vivid-red-color\"><kbd>charset=<\/kbd> <\/mark>\u548c <mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-vivid-red-color\">\u201c<\/mark> \u4e4b\u95f4\u2018gb2312\u2019\u5462\uff1f<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>grep -oP 'charset=\\K&#91;^\"]+' yourfile.html<\/code><\/pre>\n\n\n\n<p>\u8fd9\u4e2a\u547d\u4ee4\u7684\u542b\u4e49\u662f\uff1a<\/p>\n\n\n\n<p><code>yourfile.html<\/code> \u662f\u4f60\u8981\u641c\u7d22\u7684\u6587\u4ef6\u3002<\/p>\n\n\n\n<p><code>-o<\/code> \u9009\u9879\u8868\u793a\u53ea\u8f93\u51fa\u5339\u914d\u7684\u90e8\u5206\u3002<\/p>\n\n\n\n<p><code>-P<\/code> \u9009\u9879\u8868\u793a\u4f7f\u7528 Perl \u517c\u5bb9\u7684\u6b63\u5219\u8868\u8fbe\u5f0f\u3002<\/p>\n\n\n\n<p><code>'charset=\\K[^\"]+'<\/code> \u662f\u6b63\u5219\u8868\u8fbe\u5f0f\u7684\u6a21\u5f0f\uff0c\u5b83\u5339\u914d\u4ee5 <code>charset=<\/code> \u5f00\u5934\uff0c\u540e\u9762\u8ddf\u7740\u4e00\u4e2a\u6216\u591a\u4e2a\u4e0d\u662f\u53cc\u5f15\u53f7\u5b57\u7b26\u7684\u5185\u5bb9\u3002<br><code>\\K<\/code> \u662f\u5728 Perl \u517c\u5bb9\u7684\u6b63\u5219\u8868\u8fbe\u5f0f\u4e2d\u7528\u6765\u6307\u793a\u5ffd\u7565\u4e4b\u524d\u5339\u914d\u7684\u5185\u5bb9\uff0c\u53ea\u8f93\u51fa\u4ece <code>\\K<\/code> \u540e\u9762\u5f00\u59cb\u5339\u914d\u7684\u5185\u5bb9<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5728\u65e5\u5e38\u5de5\u4f5c\u4e2d\uff0c\u5904\u7406\u6587\u672c\u6570\u636e\u662f\u4e00\u9879\u5e38\u89c1\u4efb\u52a1\u3002\u800c grep \u547d\u4ee4\u4f5c\u4e3a\u6587\u672c\u5904\u7406\u4e2d\u7684\u5229\u5668\uff0c\u4e0d\u4ec5\u53ef\u4ee5\u7528\u6765\u641c\u7d22\u6307\u5b9a\u6a21\u5f0f\u7684\u6587&#8230;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-281","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/znl.pub\/index.php?rest_route=\/wp\/v2\/posts\/281","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/znl.pub\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/znl.pub\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/znl.pub\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/znl.pub\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=281"}],"version-history":[{"count":3,"href":"https:\/\/znl.pub\/index.php?rest_route=\/wp\/v2\/posts\/281\/revisions"}],"predecessor-version":[{"id":284,"href":"https:\/\/znl.pub\/index.php?rest_route=\/wp\/v2\/posts\/281\/revisions\/284"}],"wp:attachment":[{"href":"https:\/\/znl.pub\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=281"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/znl.pub\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=281"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/znl.pub\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=281"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}