{"id":3198,"date":"2019-06-25T13:24:48","date_gmt":"2019-06-25T05:24:48","guid":{"rendered":"https:\/\/www.linuxcool.com\/?p=3198"},"modified":"2022-05-17T21:14:10","modified_gmt":"2022-05-17T13:14:10","slug":"dd","status":"publish","type":"post","link":"https:\/\/www.linuxcool.com\/dd","title":{"rendered":"dd\u547d\u4ee4 &#8211; \u62f7\u8d1d\u53ca\u8f6c\u6362\u6587\u4ef6"},"content":{"rendered":"\n<p>dd\u547d\u4ee4\u6765\u81ea\u4e8e\u82f1\u6587\u8bcd\u7ec4\u201cdisk dump\u201d\u7684\u7f29\u5199\uff0c\u5176\u529f\u80fd\u662f\u7528\u4e8e\u62f7\u8d1d\u53ca\u8f6c\u6362\u6587\u4ef6\u3002\u4f7f\u7528dd\u547d\u4ee4\u53ef\u4ee5\u6309\u7167\u6307\u5b9a\u5927\u5c0f\u7684\u6570\u636e\u5757\u6765\u62f7\u8d1d\u6587\u4ef6\uff0c\u5e76\u5728\u62f7\u8d1d\u7684\u8fc7\u7a0b\u4e2d\u5bf9\u5185\u5bb9\u8fdb\u884c\u8f6c\u6362\u3002<\/p>\n\n\n\n<p><strong>\u8bed\u6cd5\u683c\u5f0f\uff1a<\/strong>dd \u53c2\u6570 \u5bf9\u8c61<\/p>\n\n\n\n<p><strong>\u5e38\u7528\u53c2\u6570\uff1a<\/strong><\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td>-v<\/td><td>\u663e\u793a\u7248\u672c\u4fe1\u606f<\/td><\/tr><tr><td>-h<\/td><td>\u663e\u793a\u5e2e\u52a9\u4fe1\u606f<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p><strong>\u53c2\u8003\u5b9e\u4f8b<\/strong><\/p>\n\n\n\n<p>\u751f\u6210\u4e00\u4e2a\u6307\u5b9a\u5927\u5c0f\uff08500M\uff09\u7684\u65b0\u6587\u4ef6\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">[root@linuxcool ~]# <strong>dd if=\/dev\/zero of=bigfile count=1 bs=500M<\/strong>\r\n1+0 records in\r\n1+0 records out\r\n524288000 bytes (524 MB, 500 MiB) copied, 1.13337 s, 463 MB\/s<\/pre>\n\n\n\n<p>\u62f7\u8d1d\u6307\u5b9a\u6587\u4ef6\u7684\u524d50\u4e2a\u5b57\u8282\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">[root@linuxcool ~]# <strong>dd if=anaconda-ks.cfg of=ana.cfg count=1 bs=50<\/strong>\r\n1+0 records in\r\n1+0 records out\r\n50 bytes copied, 0.000441764 s, 113 kB\/s\r<\/pre>\n\n\n\n<p>\u62f7\u8d1d\u6307\u5b9a\u6587\u4ef6\u7684\u5185\u5bb9\uff0c\u5e76\u5c06\u6240\u6709\u5b57\u7b26\u8f6c\u6362\u6210\u5927\u5199\u540e\u8f93\u51fa\u5230\u65b0\u6587\u4ef6\u4e2d\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">[root@linuxcool ~]# <strong>dd if=anaconda-ks.cfg of=ana.cfg conv=ucase<\/strong>\r\n2+1 records in\r\n2+1 records out\r\n1388 bytes (1.4 kB, 1.4 KiB) copied, 0.000234248 s, 5.9 MB\/s\r<\/pre>\n","protected":false},"excerpt":{"rendered":"<p>dd\u547d\u4ee4\u6765\u81ea\u4e8e\u82f1\u6587\u8bcd\u7ec4\u201cdisk dump\u201d\u7684\u7f29\u5199\uff0c\u5176\u529f\u80fd\u662f\u7528\u4e8e\u62f7\u8d1d\u53ca\u8f6c\u6362\u6587\u4ef6\u3002\u4f7f\u7528dd\u547d\u4ee4\u53ef\u4ee5\u6309\u7167\u6307\u5b9a\u5927\u5c0f\u7684 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[1],"tags":[],"_links":{"self":[{"href":"https:\/\/www.linuxcool.com\/wp-json\/wp\/v2\/posts\/3198"}],"collection":[{"href":"https:\/\/www.linuxcool.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.linuxcool.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.linuxcool.com\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.linuxcool.com\/wp-json\/wp\/v2\/comments?post=3198"}],"version-history":[{"count":10,"href":"https:\/\/www.linuxcool.com\/wp-json\/wp\/v2\/posts\/3198\/revisions"}],"predecessor-version":[{"id":9801,"href":"https:\/\/www.linuxcool.com\/wp-json\/wp\/v2\/posts\/3198\/revisions\/9801"}],"wp:attachment":[{"href":"https:\/\/www.linuxcool.com\/wp-json\/wp\/v2\/media?parent=3198"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.linuxcool.com\/wp-json\/wp\/v2\/categories?post=3198"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.linuxcool.com\/wp-json\/wp\/v2\/tags?post=3198"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}