{"id":44722,"date":"2024-10-06T17:41:16","date_gmt":"2024-10-06T09:41:16","guid":{"rendered":"https:\/\/server.hk\/cnblog\/44722\/"},"modified":"2024-10-06T17:41:16","modified_gmt":"2024-10-06T09:41:16","slug":"linux-%e5%91%bd%e4%bb%a4%ef%bc%9ahead-%e8%bc%b8%e5%87%ba%e6%96%87%e4%bb%b6%e7%9a%84%e5%89%8d%e9%9d%a2%e9%83%a8%e5%88%86","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/44722\/","title":{"rendered":"Linux \u547d\u4ee4\uff1ahead &#8211; \u8f38\u51fa\u6587\u4ef6\u7684\u524d\u9762\u90e8\u5206"},"content":{"rendered":"<h1 id=\"linux-%e5%91%bd%e4%bb%a4%ef%bc%9ahead-%e8%bc%b8%e5%87%ba%e6%96%87%e4%bb%b6%e7%9a%84%e5%89%8d%e9%9d%a2%e9%83%a8%e5%88%86-FnwAaTjxpK\">Linux \u547d\u4ee4\uff1ahead &#8211; \u8f38\u51fa\u6587\u4ef6\u7684\u524d\u9762\u90e8\u5206<\/h1>\n<p>\u5728 Linux \u7cfb\u7d71\u4e2d\uff0c\u547d\u4ee4\u884c\u5de5\u5177\u662f\u9032\u884c\u6587\u4ef6\u64cd\u4f5c\u7684\u91cd\u8981\u624b\u6bb5\u3002\u5176\u4e2d\uff0c<code>head<\/code> \u547d\u4ee4\u662f\u4e00\u500b\u975e\u5e38\u5be6\u7528\u7684\u5de5\u5177\uff0c\u4e3b\u8981\u7528\u65bc\u986f\u793a\u6587\u4ef6\u7684\u524d\u5e7e\u884c\u5167\u5bb9\u3002\u9019\u5c0d\u65bc\u5feb\u901f\u67e5\u770b\u6587\u4ef6\u7684\u958b\u982d\u90e8\u5206\uff0c\u7279\u5225\u662f\u7576\u6587\u4ef6\u5167\u5bb9\u9f90\u5927\u6642\uff0c\u986f\u5f97\u5c24\u70ba\u91cd\u8981\u3002<\/p>\n<h2 id=\"%e5%9f%ba%e6%9c%ac%e7%94%a8%e6%b3%95-FnwAaTjxpK\">\u57fa\u672c\u7528\u6cd5<\/h2>\n<p><code>head<\/code> \u547d\u4ee4\u7684\u57fa\u672c\u8a9e\u6cd5\u5982\u4e0b\uff1a<\/p>\n<pre><code>head [\u9078\u9805] [\u6587\u4ef6\u540d]<\/code><\/pre>\n<p>\u5982\u679c\u4e0d\u6307\u5b9a\u4efb\u4f55\u9078\u9805\uff0c<code>head<\/code> \u9ed8\u8a8d\u6703\u986f\u793a\u6587\u4ef6\u7684\u524d 10 \u884c\u3002\u4f8b\u5982\uff0c\u82e5\u8981\u67e5\u770b\u540d\u70ba <code>example.txt<\/code> \u7684\u6587\u4ef6\u7684\u524d 10 \u884c\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\uff1a<\/p>\n<pre><code>head example.txt<\/code><\/pre>\n<h2 id=\"%e5%b8%b8%e7%94%a8%e9%81%b8%e9%a0%85-FnwAaTjxpK\">\u5e38\u7528\u9078\u9805<\/h2>\n<p>\u9664\u4e86\u57fa\u672c\u7528\u6cd5\u5916\uff0c<code>head<\/code> \u547d\u4ee4\u9084\u63d0\u4f9b\u4e86\u4e00\u4e9b\u9078\u9805\uff0c\u4f7f\u7528\u8005\u53ef\u4ee5\u6839\u64da\u9700\u8981\u9032\u884c\u8abf\u6574\uff1a<\/p>\n<ul>\n<li><code>-n<\/code>\uff1a\u6307\u5b9a\u8981\u986f\u793a\u7684\u884c\u6578\u3002\u4f8b\u5982\uff0c\u82e5\u8981\u986f\u793a\u524d 5 \u884c\uff0c\u53ef\u4ee5\u4f7f\u7528\uff1a<\/li>\n<pre><code>head -n 5 example.txt<\/code><\/pre>\n<li><code>-c<\/code>\uff1a\u6307\u5b9a\u8981\u986f\u793a\u7684\u5b57\u5143\u6578\u3002\u4f8b\u5982\uff0c\u82e5\u8981\u986f\u793a\u524d 20 \u500b\u5b57\u5143\uff0c\u53ef\u4ee5\u4f7f\u7528\uff1a<\/li>\n<pre><code>head -c 20 example.txt<\/code><\/pre>\n<li><code>-q<\/code>\uff1a\u5728\u986f\u793a\u591a\u500b\u6587\u4ef6\u6642\uff0c\u4e0d\u986f\u793a\u6587\u4ef6\u540d\u3002\u9019\u5c0d\u65bc\u6279\u91cf\u8655\u7406\u6587\u4ef6\u6642\u975e\u5e38\u6709\u7528\u3002<\/li>\n<\/ul>\n<h2 id=\"%e5%af%a6%e9%9a%9b%e6%87%89%e7%94%a8%e6%a1%88%e4%be%8b-FnwAaTjxpK\">\u5be6\u969b\u61c9\u7528\u6848\u4f8b<\/h2>\n<p>\u5728\u65e5\u5e38\u5de5\u4f5c\u4e2d\uff0c<code>head<\/code> \u547d\u4ee4\u53ef\u4ee5\u7528\u65bc\u591a\u7a2e\u60c5\u5883\u3002\u4f8b\u5982\uff0c\u7576\u4f60\u9700\u8981\u5feb\u901f\u6aa2\u67e5\u65e5\u8a8c\u6587\u4ef6\u7684\u6700\u65b0\u8a18\u9304\u6642\uff0c\u53ef\u4ee5\u4f7f\u7528\uff1a<\/p>\n<pre><code>head \/var\/log\/syslog<\/code><\/pre>\n<p>\u9019\u6a23\u53ef\u4ee5\u8fc5\u901f\u7372\u53d6\u7cfb\u7d71\u65e5\u8a8c\u7684\u6700\u65b0\u4fe1\u606f\uff0c\u800c\u7121\u9700\u6253\u958b\u6574\u500b\u6587\u4ef6\u3002<\/p>\n<p>\u6b64\u5916\uff0c<code>head<\/code> \u547d\u4ee4\u4e5f\u53ef\u4ee5\u8207\u5176\u4ed6\u547d\u4ee4\u7d50\u5408\u4f7f\u7528\uff0c\u5f62\u6210\u66f4\u5f37\u5927\u7684\u529f\u80fd\u3002\u4f8b\u5982\uff0c\u82e5\u8981\u67e5\u770b\u67d0\u500b\u547d\u4ee4\u7684\u8f38\u51fa\u7d50\u679c\u7684\u524d\u5e7e\u884c\uff0c\u53ef\u4ee5\u4f7f\u7528\u7ba1\u9053\u7b26\u865f <code>|<\/code>\uff1a<\/p>\n<pre><code>ls -l | head -n 5<\/code><\/pre>\n<p>\u9019\u689d\u547d\u4ee4\u5c07\u986f\u793a\u7576\u524d\u76ee\u9304\u4e0b\u7684\u524d 5 \u500b\u6587\u4ef6\u6216\u76ee\u9304\u7684\u8a73\u7d30\u4fe1\u606f\u3002<\/p>\n<h2 id=\"%e6%b3%a8%e6%84%8f%e4%ba%8b%e9%a0%85-FnwAaTjxpK\">\u6ce8\u610f\u4e8b\u9805<\/h2>\n<p>\u4f7f\u7528 <code>head<\/code> \u547d\u4ee4\u6642\uff0c\u9700\u6ce8\u610f\u4ee5\u4e0b\u5e7e\u9ede\uff1a<\/p>\n<ul>\n<li>\u5982\u679c\u6307\u5b9a\u7684\u6587\u4ef6\u4e0d\u5b58\u5728\uff0c\u7cfb\u7d71\u5c07\u8fd4\u56de\u932f\u8aa4\u4fe1\u606f\u3002<\/li>\n<li>\u5c0d\u65bc\u7a7a\u6587\u4ef6\uff0c<code>head<\/code> \u4e0d\u6703\u986f\u793a\u4efb\u4f55\u5167\u5bb9\u3002<\/li>\n<li>\u5728\u8655\u7406\u5927\u578b\u6587\u4ef6\u6642\uff0c<code>head<\/code> \u547d\u4ee4\u7684\u57f7\u884c\u901f\u5ea6\u975e\u5e38\u5feb\uff0c\u56e0\u70ba\u5b83\u53ea\u9700\u8b80\u53d6\u6587\u4ef6\u7684\u524d\u5e7e\u884c\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b8%bd%e7%b5%90-FnwAaTjxpK\">\u7e3d\u7d50<\/h2>\n<p>\u7e3d\u7684\u4f86\u8aaa\uff0c<code>head<\/code> \u547d\u4ee4\u662f\u4e00\u500b\u7c21\u55ae\u800c\u5f37\u5927\u7684\u5de5\u5177\uff0c\u80fd\u5920\u5e6b\u52a9\u4f7f\u7528\u8005\u5feb\u901f\u67e5\u770b\u6587\u4ef6\u7684\u524d\u9762\u90e8\u5206\u3002\u7121\u8ad6\u662f\u5728\u65e5\u5e38\u7684\u7cfb\u7d71\u7ba1\u7406\u9084\u662f\u958b\u767c\u5de5\u4f5c\u4e2d\uff0c<code>head<\/code> \u90fd\u80fd\u63d0\u4f9b\u4fbf\u5229\u3002\u82e5\u60a8\u5c0d\u65bc Linux \u547d\u4ee4\u6709\u9032\u4e00\u6b65\u7684\u8208\u8da3\uff0c\u6216\u9700\u8981\u66f4\u9ad8\u6548\u7684 <a href=\"https:\/\/server.hk\">VPS<\/a> \u89e3\u6c7a\u65b9\u6848\uff0c\u6b61\u8fce\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9\u4ee5\u7372\u53d6\u66f4\u591a\u8cc7\u8a0a\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4e86\u89e3 Linux \u547d\u4ee4 &#8220;head&#8221;\uff0c\u8f15\u9b06\u8f38\u51fa\u6587\u4ef6\u7684\u524d\u9762\u90e8\u5206\uff0c\u5feb\u901f\u67e5\u770b\u5167\u5bb9\uff0c\u63d0\u5347\u5de5\u4f5c\u6548\u7387\u3002<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4924],"tags":[],"class_list":["post-44722","post","type-post","status-publish","format-standard","hentry","category-setup-tutorials"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/44722","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=44722"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/44722\/revisions"}],"predecessor-version":[{"id":44723,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/44722\/revisions\/44723"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=44722"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=44722"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=44722"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}