{"id":1673,"date":"2017-01-19T11:04:03","date_gmt":"2017-01-19T03:04:03","guid":{"rendered":"http:\/\/cn.hostease.com\/xueyuan\/?p=1673"},"modified":"2025-01-06T20:10:42","modified_gmt":"2025-01-06T12:10:42","slug":"linux-io-%e9%87%8d%e5%ae%9a%e5%90%91%e5%9f%ba%e7%a1%80","status":"publish","type":"post","link":"https:\/\/cn.hostease.com\/xueyuan\/jishu\/linux\/linux-io-%e9%87%8d%e5%ae%9a%e5%90%91%e5%9f%ba%e7%a1%80\/","title":{"rendered":"Linux I\/O \u91cd\u5b9a\u5411\u57fa\u7840"},"content":{"rendered":"\n<p>Linux \u7ba1\u7406\u7684\u4e00\u4e2a\u6700\u91cd\u8981\u5e76\u4e14\u6709\u8da3\u7684\u8bdd\u9898\u662f I\/O \u91cd\u5b9a\u5411\u3002\u6b64\u529f\u80fd\u5728\u547d\u4ee4\u884c\u4e2d\u4f7f\u4f60\u80fd\u591f\u5c06\u547d\u4ee4\u7684\u8f93\u5165\u8f93\u51fa\u53d6\u81ea\u6216\u9001\u5230\u6587\u4ef6\u4e2d\uff0c\u6216\u8005\u53ef\u4ee5\u4f7f\u7528\u7ba1\u9053\u5c06\u591a\u4e2a\u547d\u4ee4\u8fde\u63a5\u5728\u4e00\u8d77\u4ee5\u5f62\u6210\u6240\u8c13\u7684\u201c<strong>\u547d\u4ee4\u7ba1\u9053<\/strong>\u201d\u3002<\/p>\n\n\n\n<p>\u6211\u4eec\u8fd0\u884c\u7684\u6240\u6709\u547d\u4ee4\u57fa\u672c\u4e0a\u4ea7\u751f\u4e24\u79cd\u8f93\u51fa\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u547d\u4ee4\u7ed3\u679c &#8211; \u7a0b\u5e8f\u4ea7\u751f\u7684\u6570\u636e\uff0c\u4ee5\u53ca<\/li>\n\n\n\n<li>\u7a0b\u5e8f\u72b6\u6001\u548c\u9519\u8bef\u6d88\u606f\uff0c\u7528\u6765\u901a\u77e5\u7528\u6237\u7a0b\u5e8f\u7684\u6267\u884c\u7ec6\u8282\u3002<\/li>\n<\/ul>\n\n\n\n<p>\u5728 Linux \u548c\u5176\u4ed6\u7c7b Unix \u7cfb\u7edf\u4e2d\uff0c\u6709\u4e09\u4e2a\u9ed8\u8ba4\u6587\u4ef6\uff08\u540d\u79f0\u5982\u4e0b\uff09\uff0c\u8fd9\u4e9b\u6587\u4ef6\u4e5f\u7531 shell \u4f7f\u7528\u6587\u4ef6\u63cf\u8ff0\u7b26\u53f7\u6807\u8bc6\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>stdin \u6216 0 &#8211; \u5b83\u8fde\u63a5\u952e\u76d8\uff0c\u5927\u591a\u6570\u7a0b\u5e8f\u4ece\u6b64\u6587\u4ef6\u8bfb\u53d6\u8f93\u5165\u3002<\/li>\n\n\n\n<li>stdout \u6216 1 &#8211; \u5b83\u8fde\u63a5\u5c4f\u5e55\uff0c\u5e76\u4e14\u6240\u6709\u7a0b\u5e8f\u5c06\u5176\u7ed3\u679c\u53d1\u9001\u5230\u6b64\u6587\u4ef6<\/li>\n\n\n\n<li>stderr \u6216 2 &#8211; \u7a0b\u5e8f\u5c06\u72b6\u6001\/\u9519\u8bef\u6d88\u606f\u53d1\u9001\u5230\u6b64\u6587\u4ef6\uff0c\u5b83\u4e5f\u8fde\u63a5\u5230\u5c4f\u5e55\u4e0a\u3002<\/li>\n<\/ul>\n\n\n\n<p>\u56e0\u6b64\uff0cI\/O \u91cd\u5b9a\u5411\u5141\u8bb8\u4f60\u66f4\u6539\u547d\u4ee4\u7684\u8f93\u5165\u6e90\u4ee5\u53ca\u5c06\u8f93\u51fa\u548c\u9519\u8bef\u6d88\u606f\u53d1\u9001\u5230\u5176\u4ed6\u5730\u65b9\u3002\u8fd9\u53ef\u4ee5\u901a\u8fc7 <code>&lt;<\/code> \u548c <code>&gt;<\/code> \u91cd\u5b9a\u5411\u64cd\u4f5c\u7b26\u6765\u5b9e\u73b0\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"toc_1\">\u5982\u4f55\u5728 Linux \u4e2d\u91cd\u5b9a\u5411\u6807\u51c6\u8f93\u51fa\u5230\u6587\u4ef6\u4e2d<\/h3>\n\n\n\n<p>\u5982\u4e0b\u9762\u7684\u793a\u4f8b\u6240\u793a\uff0c\u4f60\u53ef\u4ee5\u91cd\u5b9a\u5411\u6807\u51c6\u8f93\u51fa\uff0c\u8fd9\u91cc\uff0c\u6211\u4eec\u8981\u5b58\u50a8 top \u547d\u4ee4\u7684\u8f93\u51fa\u4ee5\u4f9b\u4ee5\u540e\u68c0\u67e5\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list linenums\">\n<li><code><span class=\"pln\">$ <\/span><span class=\"kwd\">top<\/span> <span class=\"pun\">-<\/span><span class=\"pln\">bn <\/span><span class=\"lit\">5<\/span> <span class=\"pun\">><\/span><span class=\"kwd\">top<\/span><span class=\"pun\">.<\/span><span class=\"pln\">log<\/span><\/code><\/li>\n<\/ol>\n\n\n\n<p>\u5176\u4e2d\u6807\u5fd7\u7684\u542b\u4e49\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><code>-b<\/code> &#8211; \u8ba9 <code>top<\/code> \u4ee5\u6279\u5904\u7406\u6a21\u5f0f\u8fd0\u884c\uff0c\u4ee5\u4fbf\u4f60\u53ef\u4ee5\u5c06\u5176\u8f93\u51fa\u91cd\u5b9a\u5411\u5230\u4e00\u4e2a\u6587\u4ef6\u6216\u53e6\u4e00\u4e2a\u547d\u4ee4\u3002<\/li>\n\n\n\n<li><code>-n<\/code> &#8211; \u6307\u5b9a\u547d\u4ee4\u7ec8\u6b62\u524d\u7684\u8fed\u4ee3\u6b21\u6570\u3002<\/li>\n<\/ul>\n\n\n\n<p>\u4f60\u53ef\u4ee5\u4f7f\u7528 cat \u547d\u4ee4\u6765\u67e5\u770b <code>top.log<\/code> \u6587\u4ef6\u7684\u5185\u5bb9\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list linenums\">\n<li><code><span class=\"pln\">$ <\/span><span class=\"kwd\">cat<\/span> <span class=\"kwd\">top<\/span><span class=\"pun\">.<\/span><span class=\"pln\">log<\/span><\/code><\/li>\n<\/ol>\n\n\n\n<p>\u8981\u5c06\u547d\u4ee4\u8f93\u51fa<strong>\u9644\u52a0<\/strong>\u5728\u6587\u4ef6\u540e\u9762\uff0c\u8bf7\u4f7f\u7528 <code>&gt;&gt;<\/code> \u64cd\u4f5c\u7b26\u3002<\/p>\n\n\n\n<p>\u4f8b\u5982\uff0c\u8981\u5c06 top \u547d\u4ee4\u7684\u8f93\u51fa\u8ffd\u52a0\u5728\u4e0a\u9762\u7684 <code>top.log<\/code> \u6587\u4ef6\u4e2d\uff0c\u7279\u522b\u662f\u5728\u811a\u672c\uff08\u6216\u547d\u4ee4\u884c\uff09\u4e2d\uff0c\u8bf7\u8f93\u5165\u4e0b\u9762\u7684\u90a3\u884c\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list linenums\">\n<li><code><span class=\"pln\">$ <\/span><span class=\"kwd\">top<\/span> <span class=\"pun\">-<\/span><span class=\"pln\">bn <\/span><span class=\"lit\">5<\/span> <span class=\"pun\">>><\/span><span class=\"kwd\">top<\/span><span class=\"pun\">.<\/span><span class=\"pln\">log<\/span><\/code><\/li>\n<\/ol>\n\n\n\n<p><strong>\u6ce8\u610f<\/strong>\uff1a \u4e5f\u53ef\u4ee5\u4f7f\u7528\u6587\u4ef6\u63cf\u8ff0\u7b26\u6570\u5b57\uff0c\u4e0a\u9762\u7684\u91cd\u5b9a\u5411\u547d\u4ee4\u7b49\u540c\u4e8e\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list linenums\">\n<li><code><span class=\"pln\">$ <\/span><span class=\"kwd\">top<\/span> <span class=\"pun\">-<\/span><span class=\"pln\">bn <\/span><span class=\"lit\">5<\/span> <span class=\"lit\">1<\/span><span class=\"pun\">><\/span><span class=\"kwd\">top<\/span><span class=\"pun\">.<\/span><span class=\"pln\">log<\/span><\/code><\/li>\n<\/ol>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"toc_2\">\u5982\u4f55\u5728 Linux \u4e2d\u91cd\u5b9a\u5411\u6807\u51c6\u9519\u8bef\u5230\u6587\u4ef6\u4e2d<\/h3>\n\n\n\n<p>\u8981\u91cd\u5b9a\u5411\u547d\u4ee4\u7684\u6807\u51c6\u9519\u8bef\uff0c\u4f60\u9700\u8981\u660e\u786e\u6307\u5b9a\u6587\u4ef6\u63cf\u8ff0\u7b26 <code>2<\/code>\uff0c\u4ee5\u4fbf\u8ba9 shell \u4e86\u89e3\u4f60\u6b63\u5728\u5c1d\u8bd5\u505a\u4ec0\u4e48\u3002<\/p>\n\n\n\n<p>\u4f8b\u5982\uff0c\u4e0b\u9762\u7684 ls \u547d\u4ee4\u5c06\u5728\u6ca1\u6709 root \u6743\u9650\u7684\u666e\u901a\u7cfb\u7edf\u7528\u6237\u6267\u884c\u65f6\u4ea7\u751f\u9519\u8bef\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list linenums\">\n<li><code><span class=\"pln\">$ <\/span><span class=\"kwd\">ls<\/span> <span class=\"pun\">-<\/span><span class=\"pln\">l <\/span><span class=\"pun\">\/<\/span><span class=\"pln\">root<\/span><span class=\"pun\">\/<\/span><\/code><\/li>\n<\/ol>\n\n\n\n<p>\u4f60\u53ef\u4ee5\u91cd\u5b9a\u5411\u6807\u51c6\u9519\u8bef\u5230\u6587\u4ef6\u4e2d\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list linenums\">\n<li><code><span class=\"pln\">$ <\/span><span class=\"kwd\">ls<\/span> <span class=\"pun\">-<\/span><span class=\"pln\">l <\/span><span class=\"pun\">\/<\/span><span class=\"pln\">root<\/span><span class=\"pun\">\/<\/span> <span class=\"lit\">2<\/span><span class=\"pun\">><\/span><span class=\"kwd\">ls<\/span><span class=\"pun\">-<\/span><span class=\"pln\">error<\/span><span class=\"pun\">.<\/span><span class=\"pln\">log<\/span><\/code><\/li>\n\n\n\n<li><code><span class=\"pln\">$ <\/span><span class=\"kwd\">cat<\/span> <span class=\"kwd\">ls<\/span><span class=\"pun\">-<\/span><span class=\"pln\">error<\/span><span class=\"pun\">.<\/span><span class=\"pln\">log <\/span><\/code><\/li>\n<\/ol>\n\n\n\n<figure class=\"wp-block-image size-full\"><a href=\"https:\/\/cn.hostease.com\/xueyuan\/wp-content\/uploads\/2017\/01\/ls-error.png\"><img loading=\"lazy\" decoding=\"async\" width=\"552\" height=\"173\" src=\"https:\/\/cn.hostease.com\/xueyuan\/wp-content\/uploads\/2017\/01\/ls-error.png\" alt=\"\" class=\"wp-image-8988\" title=\"\u91cd\u5b9a\u5411\u6807\u51c6\u9519\u8bef\u5230\u6587\u4ef6\u4e2d\" srcset=\"https:\/\/cn.hostease.com\/xueyuan\/wp-content\/uploads\/2017\/01\/ls-error.png 552w, https:\/\/cn.hostease.com\/xueyuan\/wp-content\/uploads\/2017\/01\/ls-error-300x94.png 300w\" sizes=\"auto, (max-width: 552px) 100vw, 552px\" \/><\/a><\/figure>\n\n\n\n<p class=\"article_img\"><\/p>\n\n\n\n<p class=\"article_img_desc\"><em>\u91cd\u5b9a\u5411\u6807\u51c6\u9519\u8bef\u5230\u6587\u4ef6\u4e2d<\/em><\/p>\n\n\n\n<p>\u4e3a\u4e86\u5c06\u6807\u51c6\u9519\u8bef\u9644\u52a0\u5728\u6587\u4ef6\u540e\uff0c\u4f7f\u7528\u4e0b\u9762\u7684\u547d\u4ee4\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list linenums\">\n<li><code><span class=\"pln\">$ <\/span><span class=\"kwd\">ls<\/span> <span class=\"pun\">-<\/span><span class=\"pln\">l <\/span><span class=\"pun\">\/<\/span><span class=\"pln\">root<\/span><span class=\"pun\">\/<\/span> <span class=\"lit\">2<\/span><span class=\"pun\">>><\/span><span class=\"kwd\">ls<\/span><span class=\"pun\">-<\/span><span class=\"pln\">error<\/span><span class=\"pun\">.<\/span><span class=\"pln\">log<\/span><\/code><\/li>\n<\/ol>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"toc_3\">\u5982\u4f55\u91cd\u5b9a\u5411\u6807\u51c6\u8f93\u51fa\u53ca\u6807\u51c6\u9519\u8bef\u5230\u4e00\u4e2a\u6587\u4ef6\u4e2d<\/h3>\n\n\n\n<p>\u8fd8\u53ef\u4ee5\u5c06\u547d\u4ee4\u7684\u6240\u6709\u8f93\u51fa\uff08\u5305\u62ec\u6807\u51c6\u8f93\u51fa\u548c\u6807\u51c6\u9519\u8bef\uff09\u6355\u83b7\u5230\u5355\u4e2a\u6587\u4ef6\u4e2d\u3002\u8fd9\u53ef\u4ee5\u7528\u4e24\u79cd\u53ef\u80fd\u7684\u65b9\u5f0f\uff0c\u901a\u8fc7\u6307\u5b9a\u6587\u4ef6\u63cf\u8ff0\u7b26\u6765\u5b8c\u6210\uff1a<\/p>\n\n\n\n<p>1\u3001 \u7b2c\u4e00\u79cd\u662f\u76f8\u5bf9\u8f83\u65e7\u7684\u65b9\u6cd5\uff0c\u5176\u5de5\u4f5c\u65b9\u5f0f\u5982\u4e0b\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list linenums\">\n<li><code><span class=\"pln\">$ <\/span><span class=\"kwd\">ls<\/span> <span class=\"pun\">-<\/span><span class=\"pln\">l <\/span><span class=\"pun\">\/<\/span><span class=\"pln\">root<\/span><span class=\"pun\">\/<\/span> <span class=\"pun\">><\/span><span class=\"kwd\">ls<\/span><span class=\"pun\">-<\/span><span class=\"pln\">error<\/span><span class=\"pun\">.<\/span><span class=\"pln\">log <\/span><span class=\"lit\">2<\/span><span class=\"pun\">>&amp;<\/span><span class=\"lit\">1<\/span><\/code><\/li>\n<\/ol>\n\n\n\n<p>\u4e0a\u9762\u7684\u547d\u4ee4\u610f\u601d\u662f shell \u9996\u5148\u5c06 ls \u547d\u4ee4\u7684\u8f93\u51fa\u53d1\u9001\u5230\u6587\u4ef6 <code>ls-error.log<\/code>\uff08\u4f7f\u7528 <code>&gt;ls-error.log<\/code>\uff09\uff0c\u7136\u540e\u5c06\u6240\u6709\u5199\u5230\u6587\u4ef6\u63cf\u8ff0\u7b26 <code>2<\/code>\uff08\u6807\u51c6\u9519\u8bef\uff09\u7684\u9519\u8bef\u6d88\u606f\u91cd\u5b9a\u5411\u5230\u6587\u4ef6 <code>ls-error.log<\/code>\uff08\u4f7f\u7528<code>2&gt;\uff061<\/code>\uff09\u4e2d\u3002\uff08LCTT \u8bd1\u6ce8\uff1a\u6b64\u5904\u539f\u6587\u6709\u8bef\uff0c\u5f84\u6539\u3002\uff09\u8fd9\u8868\u793a\u6807\u51c6\u9519\u8bef\u4e5f\u88ab\u53d1\u9001\u5230\u4e0e\u6807\u51c6\u8f93\u51fa\u76f8\u540c\u7684\u6587\u4ef6\u4e2d\u3002<\/p>\n\n\n\n<p>2\u3001 \u7b2c\u4e8c\u79cd\u5e76\u4e14\u66f4\u76f4\u63a5\u7684\u65b9\u6cd5\u662f\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list linenums\">\n<li><code><span class=\"pln\">$ <\/span><span class=\"kwd\">ls<\/span> <span class=\"pun\">-<\/span><span class=\"pln\">l <\/span><span class=\"pun\">\/<\/span><span class=\"pln\">root<\/span><span class=\"pun\">\/<\/span> <span class=\"pun\">&amp;><\/span><span class=\"kwd\">ls<\/span><span class=\"pun\">-<\/span><span class=\"pln\">error<\/span><span class=\"pun\">.<\/span><span class=\"pln\">log<\/span><\/code><\/li>\n<\/ol>\n\n\n\n<p>\u4f60\u4e5f\u53ef\u4ee5\u8fd9\u6837\u5c06\u6807\u51c6\u8f93\u51fa\u548c\u6807\u51c6\u9519\u8bef\u9644\u52a0\u5230\u5355\u4e2a\u6587\u4ef6\u540e\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list linenums\">\n<li><code><span class=\"pln\">$ <\/span><span class=\"kwd\">ls<\/span> <span class=\"pun\">-<\/span><span class=\"pln\">l <\/span><span class=\"pun\">\/<\/span><span class=\"pln\">root<\/span><span class=\"pun\">\/<\/span> <span class=\"pun\">&amp;>><\/span><span class=\"kwd\">ls<\/span><span class=\"pun\">-<\/span><span class=\"pln\">error<\/span><span class=\"pun\">.<\/span><span class=\"pln\">log<\/span><\/code><\/li>\n<\/ol>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"toc_4\">\u5982\u4f55\u5c06\u6807\u51c6\u8f93\u5165\u91cd\u5b9a\u5411\u5230\u6587\u4ef6\u4e2d<\/h3>\n\n\n\n<p>\u5927\u591a\u6570\uff08\u5982\u679c\u4e0d\u662f\u5168\u90e8\uff09\u547d\u4ee4\u4ece\u6807\u51c6\u8f93\u5165\u83b7\u5f97\u5176\u8f93\u5165\uff0c\u5e76\u4e14\u6807\u51c6\u8f93\u5165\u9ed8\u8ba4\u8fde\u63a5\u5230\u952e\u76d8\u3002<\/p>\n\n\n\n<p>\u8981\u4ece\u952e\u76d8\u4ee5\u5916\u7684\u6587\u4ef6\u91cd\u5b9a\u5411\u6807\u51c6\u8f93\u5165\uff0c\u8bf7\u4f7f\u7528 <code>&lt;<\/code> \u64cd\u4f5c\u7b26\uff0c\u5982\u4e0b\u6240\u793a\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list linenums\">\n<li><code><span class=\"pln\">$ <\/span><span class=\"kwd\">cat<\/span> <span class=\"pun\">&lt;<\/span><span class=\"pln\">domains<\/span><span class=\"pun\">.<\/span><span class=\"kwd\">list<\/span> <\/code><\/li>\n<\/ol>\n\n\n\n<figure class=\"wp-block-image size-full\"><a href=\"https:\/\/cn.hostease.com\/xueyuan\/wp-content\/uploads\/2017\/01\/domainlist.png\"><img loading=\"lazy\" decoding=\"async\" width=\"417\" height=\"116\" src=\"https:\/\/cn.hostease.com\/xueyuan\/wp-content\/uploads\/2017\/01\/domainlist.png\" alt=\"\" class=\"wp-image-8989\" title=\"\u91cd\u5b9a\u5411\u6587\u4ef6\u5230\u6807\u51c6\u8f93\u5165\u4e2d\" srcset=\"https:\/\/cn.hostease.com\/xueyuan\/wp-content\/uploads\/2017\/01\/domainlist.png 417w, https:\/\/cn.hostease.com\/xueyuan\/wp-content\/uploads\/2017\/01\/domainlist-300x83.png 300w\" sizes=\"auto, (max-width: 417px) 100vw, 417px\" \/><\/a><\/figure>\n\n\n\n<p class=\"article_img\"><\/p>\n\n\n\n<p class=\"article_img_desc\"><em>\u91cd\u5b9a\u5411\u6587\u4ef6\u5230\u6807\u51c6\u8f93\u5165\u4e2d<\/em><\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"toc_5\">\u5982\u4f55\u91cd\u5b9a\u5411\u6807\u51c6\u8f93\u5165\/\u8f93\u51fa\u5230\u6587\u4ef6\u4e2d<\/h3>\n\n\n\n<p>\u4f60\u53ef\u4ee5\u5982\u4e0b\u5728 sort \u547d\u4ee4\u4e2d\u540c\u65f6\u6267\u884c\u6807\u51c6\u8f93\u5165\u3001\u6807\u51c6\u8f93\u51fa\u7684\u91cd\u5b9a\u5411\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list linenums\">\n<li><code><span class=\"pln\">$ <\/span><span class=\"kwd\">sort<\/span> <span class=\"pun\">&lt;<\/span><span class=\"pln\">domains<\/span><span class=\"pun\">.<\/span><span class=\"kwd\">list<\/span> <span class=\"pun\">><\/span><span class=\"kwd\">sort<\/span><span class=\"pun\">.<\/span><span class=\"pln\">output<\/span><\/code><\/li>\n<\/ol>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"toc_6\">\u5982\u4f55\u4f7f\u7528\u7ba1\u9053\u8fdb\u884c I\/O \u91cd\u5b9a\u5411<\/h3>\n\n\n\n<p>\u8981\u5c06\u4e00\u4e2a\u547d\u4ee4\u7684\u8f93\u51fa\u91cd\u5b9a\u5411\u4e3a\u53e6\u4e00\u4e2a\u547d\u4ee4\u7684\u8f93\u5165\uff0c\u4f60\u53ef\u4ee5\u4f7f\u7528\u7ba1\u9053\uff0c\u8fd9\u662f\u7528\u4e8e\u6784\u5efa\u590d\u6742\u64cd\u4f5c\u547d\u4ee4\u7684\u6709\u529b\u65b9\u6cd5\u3002<\/p>\n\n\n\n<p>\u4f8b\u5982\uff0c\u4ee5\u4e0b\u547d\u4ee4\u5c06\u5217\u51fa\u6700\u8fd1\u4fee\u6539\u7684\u524d\u4e94\u4e2a\u6587\u4ef6\u3002<\/p>\n\n\n\n<ol class=\"wp-block-list linenums\">\n<li><code><span class=\"pln\">$ <\/span><span class=\"kwd\">ls<\/span> <span class=\"pun\">-<\/span><span class=\"pln\">lt <\/span><span class=\"pun\">|<\/span> <span class=\"kwd\">head<\/span> <span class=\"pun\">-<\/span><span class=\"pln\">n <\/span><span class=\"lit\">5<\/span> <\/code><\/li>\n<\/ol>\n\n\n\n<p>\u9009\u9879\u7684\u610f\u601d\u662f\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><code>-l<\/code> &#8211; \u542f\u7528\u957f\u5217\u8868\u683c\u5f0f<\/li>\n\n\n\n<li><code>-t<\/code> &#8211; \u6700\u65b0\u4fee\u6539\u7684\u6587\u4ef6\u9996\u5148\u663e\u793a<\/li>\n\n\n\n<li><code>-n<\/code> &#8211; \u6307\u5b9a\u8981\u663e\u793a\u7684\u6807\u9898\u884c\u6570<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"toc_7\">\u6784\u5efa\u7ba1\u9053\u7684\u91cd\u8981\u547d\u4ee4<\/h3>\n\n\n\n<p>\u5728\u8fd9\u91cc\uff0c\u6211\u4eec\u5c06\u7b80\u8981\u56de\u987e\u4e00\u4e0b\u6784\u5efa\u547d\u4ee4\u7ba1\u9053\u7684\u4e24\u4e2a\u91cd\u8981\u547d\u4ee4\uff0c\u5b83\u4eec\u662f\uff1a<\/p>\n\n\n\n<p><code>xargs<\/code> \u7528\u4e8e\u4ece\u6807\u51c6\u8f93\u5165\u6784\u5efa\u548c\u6267\u884c\u547d\u4ee4\u884c\u3002\u4e0b\u9762\u662f\u4f7f\u7528 <code>xargs<\/code> \u7684\u7ba1\u9053\u793a\u4f8b\uff0c\u6b64\u547d\u4ee4\u7528\u4e8e\u5c06\u6587\u4ef6\u590d\u5236\u5230 Linux \u4e2d\u7684\u591a\u4e2a\u76ee\u5f55\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list linenums\">\n<li><code><span class=\"pln\">$ <\/span><span class=\"kwd\">echo<\/span> <span class=\"pun\">\/<\/span><span class=\"pln\">home<\/span><span class=\"pun\">\/<\/span><span class=\"pln\">aaronkilik<\/span><span class=\"pun\">\/<\/span><span class=\"kwd\">test<\/span><span class=\"str\">\/ \/<\/span><span class=\"pln\">home<\/span><span class=\"pun\">\/<\/span><span class=\"pln\">aaronkilik<\/span><span class=\"pun\">\/<\/span><span class=\"pln\">tmp <\/span><span class=\"pun\">|<\/span> <span class=\"kwd\">xargs<\/span> <span class=\"pun\">-<\/span><span class=\"pln\">n <\/span><span class=\"lit\">1<\/span> <span class=\"kwd\">cp<\/span> <span class=\"pun\">-<\/span><span class=\"pln\">v <\/span><span class=\"pun\">\/<\/span><span class=\"pln\">home<\/span><span class=\"pun\">\/<\/span><span class=\"pln\">aaronkilik<\/span><span class=\"pun\">\/<\/span><span class=\"pln\">bin<\/span><span class=\"pun\">\/<\/span><span class=\"pln\">sys_info<\/span><span class=\"pun\">.<\/span><span class=\"pln\">sh<\/span><\/code><\/li>\n<\/ol>\n\n\n\n<figure class=\"wp-block-image size-full\"><a href=\"https:\/\/cn.hostease.com\/xueyuan\/wp-content\/uploads\/2017\/01\/xargs.png\"><img loading=\"lazy\" decoding=\"async\" width=\"736\" height=\"97\" src=\"https:\/\/cn.hostease.com\/xueyuan\/wp-content\/uploads\/2017\/01\/xargs.png\" alt=\"\" class=\"wp-image-8990\" title=\"\u590d\u5236\u6587\u4ef6\u5230\u591a\u4e2a\u76ee\u5f55\" srcset=\"https:\/\/cn.hostease.com\/xueyuan\/wp-content\/uploads\/2017\/01\/xargs.png 736w, https:\/\/cn.hostease.com\/xueyuan\/wp-content\/uploads\/2017\/01\/xargs-300x40.png 300w\" sizes=\"auto, (max-width: 736px) 100vw, 736px\" \/><\/a><\/figure>\n\n\n\n<p class=\"article_img\"><\/p>\n\n\n\n<p class=\"article_img_desc\"><em>\u590d\u5236\u6587\u4ef6\u5230\u591a\u4e2a\u76ee\u5f55<\/em><\/p>\n\n\n\n<p>\u9009\u9879\u542b\u4e49\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><code>-n 1<\/code> &#8211; \u8ba9 <code>xargs<\/code> \u5bf9\u6bcf\u4e2a\u547d\u4ee4\u884c\u6700\u591a\u4f7f\u7528\u4e00\u4e2a\u53c2\u6570\uff0c\u5e76\u53d1\u9001\u5230 cp\u547d\u4ee4<\/li>\n\n\n\n<li><code>cp<\/code> &#8211; \u590d\u5236\u6587\u4ef6<\/li>\n\n\n\n<li><code>-v<\/code> &#8211; \u663e\u793a <code>cp<\/code> \u547d\u4ee4\u7684\u8fdb\u5ea6\u3002<\/li>\n<\/ul>\n\n\n\n<p>\u6709\u5173\u66f4\u591a\u7684\u4f7f\u7528\u9009\u9879\u548c\u4fe1\u606f\uff0c\u8bf7\u9605\u8bfb <code>xargs<\/code> \u624b\u518c\u9875\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list linenums\">\n<li><code><span class=\"pln\">$ <\/span><span class=\"kwd\">man<\/span> <span class=\"kwd\">xargs<\/span> <\/code><\/li>\n<\/ol>\n\n\n\n<p><code>tee<\/code> \u547d\u4ee4\u4ece\u6807\u51c6\u8f93\u5165\u8bfb\u53d6\uff0c\u5e76\u5199\u5165\u5230\u6807\u51c6\u8f93\u51fa\u548c\u6587\u4ef6\u4e2d\u3002\u6211\u4eec\u53ef\u4ee5\u6f14\u793a <code>tee<\/code> \u5982\u4f55\u5de5\u4f5c\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list linenums\">\n<li><code><span class=\"pln\">$ <\/span><span class=\"kwd\">echo<\/span> <span class=\"str\">\"Testing how tee command works\"<\/span> <span class=\"pun\">|<\/span> <span class=\"kwd\">tee<\/span><span class=\"pln\"> file1 <\/span><\/code><\/li>\n<\/ol>\n\n\n\n<figure class=\"wp-block-image size-full\"><a href=\"https:\/\/cn.hostease.com\/xueyuan\/wp-content\/uploads\/2017\/01\/tee.png\"><img loading=\"lazy\" decoding=\"async\" width=\"715\" height=\"135\" src=\"https:\/\/cn.hostease.com\/xueyuan\/wp-content\/uploads\/2017\/01\/tee.png\" alt=\"\" class=\"wp-image-8991\" title=\"tee \u547d\u4ee4\u793a\u4f8b\" srcset=\"https:\/\/cn.hostease.com\/xueyuan\/wp-content\/uploads\/2017\/01\/tee.png 715w, https:\/\/cn.hostease.com\/xueyuan\/wp-content\/uploads\/2017\/01\/tee-300x57.png 300w\" sizes=\"auto, (max-width: 715px) 100vw, 715px\" \/><\/a><\/figure>\n\n\n\n<p class=\"article_img\"><\/p>\n\n\n\n<p class=\"article_img_desc\"><em>tee \u547d\u4ee4\u793a\u4f8b<\/em><\/p>\n\n\n\n<p>\u6587\u4ef6\u6216\u6587\u672c\u8fc7\u6ee4\u5668\u901a\u5e38\u4e0e\u7ba1\u9053\u4e00\u8d77\u7528\u4e8e\u6709\u6548\u5730\u64cd\u4f5c Linux \u6587\u4ef6\uff0c\u6765\u4ee5\u5f3a\u5927\u7684\u65b9\u5f0f\u6765\u5904\u7406\u4fe1\u606f\uff0c\u4f8b\u5982\u547d\u4ee4\u7684\u91cd\u7ec4\u8f93\u51fa\uff08\u8fd9\u5bf9\u4e8e\u751f\u6210\u6709\u7528\u7684 Linux \u62a5\u544a\u662f\u5fc5\u4e0d\u53ef\u5c11\u7684\uff09\u3001\u4fee\u6539\u6587\u4ef6\u4e2d\u7684\u6587\u672c\u548c\u5176\u4ed6\u7684 Linux \u7cfb\u7edf\u7ba1\u7406\u4efb\u52a1\u3002<\/p>\n\n\n\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Linux \u7ba1\u7406\u7684\u4e00\u4e2a\u6700\u91cd\u8981\u5e76\u4e14\u6709\u8da3\u7684\u8bdd\u9898\u662f I\/O \u91cd\u5b9a\u5411\u3002\u6b64\u529f\u80fd\u5728\u547d\u4ee4\u884c\u4e2d\u4f7f\u4f60\u80fd\u591f\u5c06\u547d\u4ee4\u7684\u8f93\u5165\u8f93\u51fa\u53d6\u81ea\u6216\u9001 &#8230; <a title=\"Linux I\/O \u91cd\u5b9a\u5411\u57fa\u7840\" class=\"read-more\" href=\"https:\/\/cn.hostease.com\/xueyuan\/jishu\/linux\/linux-io-%e9%87%8d%e5%ae%9a%e5%90%91%e5%9f%ba%e7%a1%80\/\" aria-label=\"\u9605\u8bfb Linux I\/O \u91cd\u5b9a\u5411\u57fa\u7840\">\u9605\u8bfb\u66f4\u591a<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[49],"tags":[531,38],"class_list":["post-1673","post","type-post","status-publish","format-standard","hentry","category-linux","tag-io","tag-linux"],"aioseo_notices":[],"jetpack_featured_media_url":"","jetpack-related-posts":[],"jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/cn.hostease.com\/xueyuan\/wp-json\/wp\/v2\/posts\/1673","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/cn.hostease.com\/xueyuan\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/cn.hostease.com\/xueyuan\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/cn.hostease.com\/xueyuan\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/cn.hostease.com\/xueyuan\/wp-json\/wp\/v2\/comments?post=1673"}],"version-history":[{"count":2,"href":"https:\/\/cn.hostease.com\/xueyuan\/wp-json\/wp\/v2\/posts\/1673\/revisions"}],"predecessor-version":[{"id":8992,"href":"https:\/\/cn.hostease.com\/xueyuan\/wp-json\/wp\/v2\/posts\/1673\/revisions\/8992"}],"wp:attachment":[{"href":"https:\/\/cn.hostease.com\/xueyuan\/wp-json\/wp\/v2\/media?parent=1673"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/cn.hostease.com\/xueyuan\/wp-json\/wp\/v2\/categories?post=1673"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/cn.hostease.com\/xueyuan\/wp-json\/wp\/v2\/tags?post=1673"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}