{"id":1476,"date":"2025-09-17T20:59:08","date_gmt":"2025-09-17T12:59:08","guid":{"rendered":"http:\/\/heqiwei.cn\/?p=1476"},"modified":"2025-09-17T20:59:09","modified_gmt":"2025-09-17T12:59:09","slug":"%e3%80%90mit6-s081%e3%80%91lab0%ef%bc%9acopy-c","status":"publish","type":"post","link":"https:\/\/heqiwei.cn\/index.php\/2025\/09\/17\/%e3%80%90mit6-s081%e3%80%91lab0%ef%bc%9acopy-c\/","title":{"rendered":"\u3010MIT6.S081\u3011lab0\uff1acopy.c"},"content":{"rendered":"\n<p>\u672c\u4eba\u5728\u5b66\u4e60MIT6.S081\u7684lecture 1\u65f6\uff0c\u60f3\u590d\u73b0\u8001\u5e08\u7f16\u8bd1\u8fd0\u884ccopy.c\u6587\u4ef6\u7684\u64cd\u4f5c\uff0c\u4f46\u662f\u9047\u5230\u4e86\u91cd\u91cd\u963b\u788d\uff0c\u67e5\u9605\u4e86\u8bb8\u591a\u7ecf\u9a8c\u8d34\u540e\u624d\u5f97\u4ee5\u89e3\u51b3\uff0c\u73b0\u5728\u5c06\u63a2\u7d22\u8fc7\u7a0b\u590d\u76d8\u5982\u4e0b\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">1.\u5728linux\u4e2d\u7f16\u8f91\u6587\u4ef6<\/h2>\n\n\n\n<p>linux\u63d0\u4f9b\u4e86vi\u7f16\u8f91\u5668\u6765\u7f16\u8f91\u4e3b\u673a\u4e2d\u7684\u6587\u4ef6\uff0c\u8fd9\u4e2a\u6587\u4ef6\u53ef\u4ee5\u662f.txt\u7684\u6587\u672c\u683c\u5f0f\uff0c\u4e5f\u53ef\u4ee5\u662f.c\u7b49\u5404\u79cd\u53ef\u7f16\u8f91\u683c\u5f0f\u3002\u5176\u4f7f\u7528\u65b9\u6cd5\u5f88\u7b80\u5355\uff0c\u53ea\u9700\u8981\u8f93\u5165<code>vi &lt;\u6587\u4ef6\u540d&gt;<\/code>\u5373\u53ef\uff0c\u5982\u6211\u60f3\u5728\u684c\u9762\u521b\u5efa\u4e00\u4e2acopy.c\u6587\u4ef6\uff0c\u90a3\u6211\u7684\u6307\u4ee4\u5c31\u662f\u8f93\u5165\u5728\u201c\u684c\u9762\u201d\u7684\u6839\u76ee\u5f55\u4e0b\u7684<code>vi copy.c<\/code>\u3002<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full is-resized\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='http:\/\/heqiwei.cn\/wp-content\/uploads\/2025\/09\/image-1.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"727\" height=\"473\" data-original=\"http:\/\/heqiwei.cn\/wp-content\/uploads\/2025\/09\/image-1.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-1479\" style=\"width:723px;height:auto\"  sizes=\"auto, (max-width: 727px) 100vw, 727px\" \/><\/div><\/figure>\n<\/div>\n\n\n<p>\u6309\u4e0benter\u540e\uff0c\u7cfb\u7edf\u5c31\u4f1a\u81ea\u52a8\u5728\u684c\u9762\u521b\u5efa\u4e00\u4e2acopy.c\u6587\u4ef6\uff0c\u5e76\u4e14\u7ec8\u7aef\u4f1a\u8fdb\u5165vi\u7684\u547d\u4ee4\u6a21\u5f0f\uff0c\u5982\u4e0b\u56fe\u3002<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='http:\/\/heqiwei.cn\/wp-content\/uploads\/2025\/09\/image-2.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"735\" height=\"489\" data-original=\"http:\/\/heqiwei.cn\/wp-content\/uploads\/2025\/09\/image-2.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-1480\"  sizes=\"auto, (max-width: 735px) 100vw, 735px\" \/><\/div><\/figure>\n<\/div>\n\n\n<p>\u6b64\u65f6\u6211\u4eec\u9700\u8981\u4ece\u547d\u4ee4\u6a21\u5f0f\u5207\u6362\u5230\u7f16\u8f91\u6a21\u5f0f\uff0c\u6b64\u65f6\u53ea\u8981\u5728\u952e\u76d8\u4e0a\u6309\u4e0ba\u3001A\u3001i\u3001I\u3001o\u3001O\u4e2d\u4efb\u4f55\u4e00\u4e2a\u5b57\u7b26\u5373\u53ef\u8fdb\u5165\u7f16\u8f91\u6a21\u5f0f\uff0c\u8fd9\u4e9b\u5b57\u7b26\u5404\u81ea\u7684\u542b\u4e49\u5982\u4e0b\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>a:\u5728\u5f53\u524d\u5149\u6807\u4e0b\u4e00\u4f4d\u5f00\u59cb\u7f16\u8f91<\/li>\n\n\n\n<li>A:\u5728\u5f53\u524d\u5149\u6807\u6240\u5728\u884c\u884c\u5c3e\u5f00\u59cb\u7f16\u8f91<\/li>\n\n\n\n<li>i:\u5728\u5f53\u524d\u5149\u6807\u5f00\u59cb\u7f16\u8f91<\/li>\n\n\n\n<li>I:\u5728\u5f53\u524d\u5149\u6807\u6240\u5728\u884c\u884c\u9996\u5f00\u59cb\u7f16\u8f91<\/li>\n\n\n\n<li>o:\u5728\u5f53\u524d\u5149\u6807\u7684\u4e0b\u4e00\u884c\u5f00\u59cb\u7f16\u8f91<\/li>\n\n\n\n<li>O:\u5728\u5f53\u524d\u5149\u6807\u7684\u4e0a\u4e00\u884c\u5f00\u59cb\u7f16\u8f91<\/li>\n<\/ul>\n\n\n\n<p>\u8fd9\u91cc\u6211\u4eec\u9009\u62e9\u6309\u4e0b\u5c0f\u5199i\uff0c\u5728\u5f53\u524d\u5149\u6807\u5904\u5f00\u59cb\u7f16\u8f91\uff0c\u6309\u4e0b\u4e4b\u540e\u5de6\u4e0b\u89d2\u53d8\u6210\u4e86\u201c&#8211; \u63d2\u5165 &#8211;\u201d\uff0c\u5982\u4e0b\u56fe\u3002<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='http:\/\/heqiwei.cn\/wp-content\/uploads\/2025\/09\/image-3.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"735\" height=\"486\" data-original=\"http:\/\/heqiwei.cn\/wp-content\/uploads\/2025\/09\/image-3.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-1481\"  sizes=\"auto, (max-width: 735px) 100vw, 735px\" \/><\/div><\/figure>\n<\/div>\n\n\n<p><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-vivid-red-color\">\u6ce8\uff1a\u5982\u679c\u4f60\u53d1\u73b0\u6309\u4e0bi\u540e\u6ca1\u6709\u53d8\u5316\uff0c\u5e76\u4e14\u51fa\u73b0\u75c7\u72b6\uff1a<\/mark><\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-vivid-red-color\">\u6309\u952e\u76d8\u4e0a\u7684\u65b9\u5411\u952e\u540e\u7ec8\u7aef\u5374\u663e\u793a\u51faABCD\u7b49\u5b57\u7b26<\/mark><\/li>\n\n\n\n<li><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-vivid-red-color\">backspace\uff08\u5220\u9664\uff09\u952e\u4e0d\u8d77\u4f5c\u7528<\/mark><\/li>\n<\/ol>\n\n\n\n<p><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-vivid-red-color\">\u65f6\uff0c\u8bf7\u79fb\u6b65\u81f3<\/mark><a href=\"https:\/\/blog.csdn.net\/a12355556\/article\/details\/120512771\">https:\/\/blog.csdn.net\/a12355556\/article\/details\/120512771<\/a><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-vivid-red-color\">\uff0c\u5148\u89e3\u51b3\u6b64\u95ee\u9898\u3002<\/mark><\/p>\n\n\n\n<p>\u8a00\u5f52\u6b63\u4f20\uff0c\u63a5\u4e0b\u6765\u9ed8\u8ba4\u5927\u5bb6\u7684vi\/vim\u7f16\u8f91\u5668\u90fd\u53ef\u4ee5\u6b63\u5e38\u4f7f\u7528\u3002<\/p>\n\n\n\n<p>\u5728\u7f16\u8f91\u6a21\u5f0f\u4e0b\uff0c\u6211\u4eec\u53ef\u4ee5\u8f93\u5165\u4efb\u610f\u5185\u5bb9\uff0c\u6b64\u5904\u6211\u9009\u62e9\u8f93\u5165lecture 1\u4e2d\u793a\u8303\u7684\u4ee3\u7801\u3002\u8f93\u5165\u5b8c\u6210\u540e\uff0c\u6309\u4e0besc\u9000\u51fa\u7f16\u8f91\u6a21\u5f0f\uff0c\u5982\u4e0b\u56fe\uff1a<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='http:\/\/heqiwei.cn\/wp-content\/uploads\/2025\/09\/image-5.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"733\" height=\"486\" data-original=\"http:\/\/heqiwei.cn\/wp-content\/uploads\/2025\/09\/image-5.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-1484\"  sizes=\"auto, (max-width: 733px) 100vw, 733px\" \/><\/div><\/figure>\n<\/div>\n\n\n<p>\u4e0a\u56fe\u4e2d\u7684\u793a\u4f8b\u4ee3\u7801\u5982\u4e0b\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>#include \"kernel\/types.h\"\n#include \"user\/user.h\"\n\nint main()\n{\n\tchar buf&#91;64];\n\twhile(1){\n\t\tint n = read(0,buf,sizeof(buf));\n\t\tif(n &lt;= 0)\n\t\t\tbreak;\n\t\twrite(1,buf,n);\n\t}\n\texit(0);\n}<\/code><\/pre>\n\n\n\n<p>\u6b64\u65f6\u6211\u4eec\u60f3\u8981\u4fdd\u5b58\u5e76\u9000\u51fa\uff0c\u53ea\u9700\u8981\u76f4\u63a5\u8f93\u5165:wq\uff0c\u5e76\u6309\u4e0b\u56de\u8f66\u5373\u53ef\uff0c\u5982\u4e0b\u56fe\uff08\u4e0d\u7528\u8c03\u6574\u5149\u6807\u4f4d\u7f6e\uff0c\u952e\u5165:\u65f6\u5149\u6807\u4f1a\u81ea\u52a8\u8df3\u8f6c\u5230\u5e95\u90e8\uff09<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='http:\/\/heqiwei.cn\/wp-content\/uploads\/2025\/09\/image-6.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"734\" height=\"483\" data-original=\"http:\/\/heqiwei.cn\/wp-content\/uploads\/2025\/09\/image-6.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-1485\"  sizes=\"auto, (max-width: 734px) 100vw, 734px\" \/><\/div><\/figure>\n<\/div>\n\n\n<p>\u7136\u540e\u5173\u95ed\u7ec8\u7aef\uff0c\u4f60\u4f1a\u53d1\u73b0\u684c\u9762\u4e0a\u591a\u4e86\u4e00\u4efdcopy.c\u6587\u4ef6\uff0c\u4f60\u53ef\u4ee5\u53cc\u51fb\u786e\u8ba4\u5176\u4e2d\u7684\u5185\u5bb9\u662f\u5426\u548c\u6211\u4eec\u521a\u521a\u952e\u5165\u7684\u76f8\u540c\uff0c\u5982\u679c\u4e00\u81f4\uff0c\u90a3\u5c31\u8bf4\u660e\u6211\u4eec\u521b\u5efa\u6210\u529f\u4e86\u3002<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='http:\/\/heqiwei.cn\/wp-content\/uploads\/2025\/09\/image-7.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"91\" height=\"98\" data-original=\"http:\/\/heqiwei.cn\/wp-content\/uploads\/2025\/09\/image-7.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-1486\"\/><\/div><\/figure>\n<\/div>\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full is-resized\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='http:\/\/heqiwei.cn\/wp-content\/uploads\/2025\/09\/image-9.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"902\" height=\"747\" data-original=\"http:\/\/heqiwei.cn\/wp-content\/uploads\/2025\/09\/image-9.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-1489\" style=\"width:744px;height:auto\"  sizes=\"auto, (max-width: 902px) 100vw, 902px\" \/><\/div><\/figure>\n<\/div>\n\n\n<h2 class=\"wp-block-heading\">2.\u5728\u6b63\u786e\u7684\u76ee\u5f55\u4e0b\u521b\u5efa\u4ee3\u7801<\/h2>\n\n\n\n<p>\u7531\u4e8exv6\u7cfb\u7edf\u672c\u8eab\u5e76\u6ca1\u6709\u7f16\u8bd1\u5668\u7684\u5b9e\u73b0\uff0c\u6240\u4ee5\u6211\u4eec\u9700\u8981\u628a\u7a0b\u5e8f\u5728\u7f16\u8bd1\u7cfb\u7edf\u65f6\u4e00\u5e76\u7f16\u8bd1\uff0c\u56e0\u6b64\uff0c\u6211\u4eec\u9700\u8981\u5728xv6\u7cfb\u7edf\u7684\u7f16\u8bd1\u6587\u4ef6\u5939\u4e2d\u52a0\u5165\u6211\u4eec\u7684copy.c\u6587\u4ef6\u3002\u5bf9\u4e8e\u4e0d\u540c\u4eba\u7684\u4e3b\u673a\uff0cxv6\u7cfb\u7edf\u5b58\u50a8\u7684\u4f4d\u7f6e\u5404\u4e0d\u76f8\u540c\uff0c\u6240\u4ee5\u6211\u4eec\u5e94\u8be5\u628a\u5f85\u7f16\u8bd1\u7684.c\u6587\u4ef6\u521b\u5efa\u5728\u6b63\u786e\u7684\u76f8\u5bf9\u4f4d\u7f6e\u3002<\/p>\n\n\n\n<p>\u6211\u4eec\u8981\u627e\u7684\u76ee\u5f55\u662f<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-vivid-cyan-blue-color\">xv6-labs-2020\/user<\/mark><\/strong>\uff0c\u6211\u4eec\u53ef\u4ee5\u5728\u7ec8\u7aef\u4e2d\u901a\u8fc7cd\u6307\u4ee4\u6765\u5207\u6362\u5230\u5bf9\u5e94\u76ee\u5f55\uff0c\u5982\u4e0b\u56fe\uff1a<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='http:\/\/heqiwei.cn\/wp-content\/uploads\/2025\/09\/image-10.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"736\" height=\"480\" data-original=\"http:\/\/heqiwei.cn\/wp-content\/uploads\/2025\/09\/image-10.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-1493\"  sizes=\"auto, (max-width: 736px) 100vw, 736px\" \/><\/div><\/figure>\n<\/div>\n\n\n<p>\u6b64\u65f6\u6211\u4eec\u53ea\u9700\u8981\u4eff\u7167\u7b2c1\u6b65\uff0c\u5728\u8be5\u76ee\u5f55\u4e0b\u521b\u5efa\u4e00\u4e2acopy.c\u6587\u4ef6\u5373\u53ef\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">3.\u4fee\u6539Makefile\u6587\u4ef6<\/h2>\n\n\n\n<p>\u4e3a\u4e86\u8ba9xv6\u5e2e\u6211\u4eec\u4e00\u8d77\u7f16\u8bd1\u6587\u4ef6\uff0c\u5149\u628a\u6587\u4ef6\u201c\u7ed9\u5b83\u201d\u8fd8\u4e0d\u884c\uff0c\u6211\u4eec\u8981\u901a\u8fc7\u4fee\u6539\u5b83\u7684\u201c\u5f85\u7f16\u8bd1\u6e05\u5355\u201d\u6765\u201c\u544a\u77e5\u5b83\u201d\u6211\u4eec\u7684\u9700\u6c42\u3002<\/p>\n\n\n\n<p>\u9996\u5148\u6211\u4eec\u5728<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-vivid-cyan-blue-color\">xv6-labs-2020<\/mark><\/strong>\u76ee\u5f55\u4e0b\u8f93\u5165\u6307\u4ee4\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>vi Makefile<\/code><\/pre>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='http:\/\/heqiwei.cn\/wp-content\/uploads\/2025\/09\/image-12.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"737\" height=\"482\" data-original=\"http:\/\/heqiwei.cn\/wp-content\/uploads\/2025\/09\/image-12.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-1496\"  sizes=\"auto, (max-width: 737px) 100vw, 737px\" \/><\/div><\/figure>\n<\/div>\n\n\n<p>\u6309\u4e0b\u56de\u8f66\u540e\uff0c\u6211\u4eec\u6309\u4e0bi\u8fdb\u5165\u7f16\u8f91\u6a21\u5f0f\uff0c\u7136\u540e\u5f80\u4e0b\u7ffb\u627e\uff0c\u627e\u5230UPROGS\u5173\u952e\u8bcd\uff0c\u8fd9\u4e0b\u9762\u5c31\u662f\u5f85\u7f16\u8bd1\u7684\u6587\u4ef6\u540d\u4e86\uff0c\u6b64\u65f6\u6211\u4eec\u53ea\u9700\u8981\u7167\u846b\u82a6\u753b\u74e2\uff0c\u5728\u540e\u9762\u63a5\u4e0a\u6211\u4eec\u7684\u6587\u4ef6\u540dcopy\u5373\u53ef\uff1a<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full is-resized\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='http:\/\/heqiwei.cn\/wp-content\/uploads\/2025\/09\/image-13.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"733\" height=\"485\" data-original=\"http:\/\/heqiwei.cn\/wp-content\/uploads\/2025\/09\/image-13.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-1497\" style=\"width:733px;height:auto\"  sizes=\"auto, (max-width: 733px) 100vw, 733px\" \/><\/div><\/figure>\n<\/div>\n\n\n<p>\u5373\u63d2\u5165\u4e0b\u9762\u7684\u4ee3\u7801\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>\n$U\/_copy\\<\/code><\/pre>\n\n\n\n<p>\u4fee\u6539\u6210\u529f\u540e\uff0c\u4f9d\u65e7\u4eff\u7167\u4e4b\u524d\u7684\u64cd\u4f5c\uff0c\u6309\u4e0besc\uff0c\u518d:wq\u5373\u53ef\u4fdd\u5b58\u9000\u51fa\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">3.\u7f16\u8bd1\u8fd0\u884cxv6<\/h2>\n\n\n\n<p>\u540c\u6837\u7684\uff0c\u6211\u4eec\u5728<strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-vivid-cyan-blue-color\">xv6-labs-2020<\/mark><\/strong>\u76ee\u5f55\u4e0b\u8f93\u5165\uff1a<code>make qemu<\/code>\u6765\u542f\u52a8xv6\u7cfb\u7edf\uff1a<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='http:\/\/heqiwei.cn\/wp-content\/uploads\/2025\/09\/image-14.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"735\" height=\"484\" data-original=\"http:\/\/heqiwei.cn\/wp-content\/uploads\/2025\/09\/image-14.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-1500\"  sizes=\"auto, (max-width: 735px) 100vw, 735px\" \/><\/div><\/figure>\n<\/div>\n\n\n<p>\u542f\u52a8\u6210\u529f\u540e\uff0c\u6211\u4eec\u53ef\u4ee5\u8f93\u5165ls\u6307\u4ee4\uff0c\u6765\u67e5\u770b\u5df2\u7f16\u8bd1\u7684\u6587\u4ef6\uff0c\u6b64\u65f6\u6211\u4eec\u5c31\u53ef\u4ee5\u770b\u5230\u521a\u521a\u6dfb\u52a0\u7684copy\uff1a<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='http:\/\/heqiwei.cn\/wp-content\/uploads\/2025\/09\/image-15.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"736\" height=\"480\" data-original=\"http:\/\/heqiwei.cn\/wp-content\/uploads\/2025\/09\/image-15.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-1501\"  sizes=\"auto, (max-width: 736px) 100vw, 736px\" \/><\/div><\/figure>\n<\/div>\n\n\n<p>\u968f\u540e\uff0c\u6211\u4eec\u5c31\u53ef\u4ee5\u4eff\u7167\u8bfe\u7a0b\u4e2d\u8001\u5e08\u7684\u64cd\u4f5c\uff0c\u76f4\u63a5\u8f93\u5165copy\u5373\u53ef\u8c03\u7528\u6211\u4eec\u7684copy\u7a0b\u5e8f\uff1a<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='http:\/\/heqiwei.cn\/wp-content\/uploads\/2025\/09\/image-16.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"740\" height=\"480\" data-original=\"http:\/\/heqiwei.cn\/wp-content\/uploads\/2025\/09\/image-16.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-1502\"  sizes=\"auto, (max-width: 740px) 100vw, 740px\" \/><\/div><\/figure>\n<\/div>\n\n\n<p>\u8981\u60f3\u9000\u51faxv6\u7cfb\u7edf\uff0c\u53ea\u9700\u8981\u5148\u6309\u4e0bctrl+a\uff0c\u7136\u540e\u518d\u6309\u4e0bx\u5373\u53ef\uff1a<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='http:\/\/heqiwei.cn\/wp-content\/uploads\/2025\/09\/image-17.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"739\" height=\"484\" data-original=\"http:\/\/heqiwei.cn\/wp-content\/uploads\/2025\/09\/image-17.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-1503\"  sizes=\"auto, (max-width: 739px) 100vw, 739px\" \/><\/div><\/figure>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>\u672c\u4eba\u5728\u5b66\u4e60MIT6.S081\u7684lecture 1\u65f6\uff0c\u60f3\u590d\u73b0\u8001\u5e08\u7f16\u8bd1\u8fd0\u884ccopy.c\u6587\u4ef6\u7684\u64cd\u4f5c\uff0c\u4f46\u662f\u9047\u5230\u4e86\u91cd\u91cd\u963b [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[21],"tags":[],"class_list":["post-1476","post","type-post","status-publish","format-standard","hentry","category-mit6-s081"],"_links":{"self":[{"href":"https:\/\/heqiwei.cn\/index.php\/wp-json\/wp\/v2\/posts\/1476","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/heqiwei.cn\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/heqiwei.cn\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/heqiwei.cn\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/heqiwei.cn\/index.php\/wp-json\/wp\/v2\/comments?post=1476"}],"version-history":[{"count":11,"href":"https:\/\/heqiwei.cn\/index.php\/wp-json\/wp\/v2\/posts\/1476\/revisions"}],"predecessor-version":[{"id":1506,"href":"https:\/\/heqiwei.cn\/index.php\/wp-json\/wp\/v2\/posts\/1476\/revisions\/1506"}],"wp:attachment":[{"href":"https:\/\/heqiwei.cn\/index.php\/wp-json\/wp\/v2\/media?parent=1476"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/heqiwei.cn\/index.php\/wp-json\/wp\/v2\/categories?post=1476"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/heqiwei.cn\/index.php\/wp-json\/wp\/v2\/tags?post=1476"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}