{"id":38,"date":"2024-04-29T15:39:17","date_gmt":"2024-04-29T07:39:17","guid":{"rendered":"https:\/\/49.235.138.13\/?p=38"},"modified":"2025-05-14T09:53:31","modified_gmt":"2025-05-14T01:53:31","slug":"dd%e5%91%bd%e4%bb%a4%e7%94%a8%e6%b3%95","status":"publish","type":"post","link":"https:\/\/xiaoxiaoxiaoyu.com\/?p=38","title":{"rendered":"dd\u547d\u4ee4\u7528\u6cd5"},"content":{"rendered":"\n<figure class=\"wp-block-table\"><table><tbody><tr><th>\u9009 \u9879<\/th><th>\u542b \u4e49<\/th><\/tr><tr><td>if=\u6587\u4ef6\u540d<\/td><td>\u8f93\u5165\u6587\u4ef6\u540d\uff0c\u7f3a\u7701\u4e3a\u6807\u51c6\u8f93\u5165\uff0c\u5373\u6307\u5b9a\u6e90\u6587\u4ef6\uff0c\u5982&lt; if=input file &gt;\u3002<\/td><\/tr><tr><td>of=\u6587\u4ef6\u540d<\/td><td>\u8f93\u51fa\u6587\u4ef6\u540d\uff0c\u7f3a\u7701\u4e3a\u6807\u51c6\u8f93\u51fa\uff0c\u5373\u6307\u5b9a\u76ee\u7684\u6587\u4ef6\uff0c\u5982&lt; of=output file &gt;\u3002<\/td><\/tr><tr><td>ibs=bytes<br>obs=bytes<br>bs=bytes<\/td><td>\u4e00\u6b21\u8bfb\u5165bytes\u5b57\u8282\uff0c\u5373\u6307\u5b9a\u4e00\u4e2a\u5757\u5927\u5c0f\u4e3a bytes \u5b57\u8282\u3002<br>\u4e00\u6b21\u8f93\u51fa bytes \u5b57\u8282\uff0c\u5373\u6307\u5b9a\u4e00\u4e2a\u5757\u5927\u5c0f\u4e3a bytes \u5b57\u8282\u3002<br>\u540c\u65f6\u8bbe\u7f6e\u8bfb\u5165\/\u8f93\u51fa\u7684\u5757\u5927\u5c0f\u4e3a bytes \u4e2a\u5b57\u8282\u3002<\/td><\/tr><tr><td>cbs=bytes<\/td><td>\u4e00\u6b21\u8f6c\u6362 bytes \u5b57\u8282\uff0c\u5373\u6307\u5b9a\u8f6c\u6362\u7f13\u51b2\u533a\u5927\u5c0f\u3002<\/td><\/tr><tr><td>skip=blocks<\/td><td>\u4ece\u8f93\u5165\u6587\u4ef6\u5f00\u5934\u8df3\u8fc7 blocks \u4e2a\u5757\u540e\u518d\u5f00\u59cb\u590d\u5236\u3002<\/td><\/tr><tr><td>seek=blocks<\/td><td>\u4ece\u8f93\u51fa\u6587\u4ef6\u5f00\u5934\u8df3\u8fc7 blocks \u4e2a\u5757\u540e\u518d\u5f00\u59cb\u590d\u5236\u3002\u6ce8\u610f\uff0c\u901a\u5e38\u53ea\u6709\u5f53\u8f93\u51fa\u6587\u4ef6\u662f\u78c1\u76d8\u6216\u78c1\u5e26\u65f6\u624d\u6709\u6548\uff0c\u5373\u5907\u4efd\u5230\u78c1\u76d8\u6216\u78c1\u5e26\u65f6\u624d\u6709\u6548\u3002<\/td><\/tr><tr><td>count=blocks<\/td><td>\u4ec5\u62f7\u8d1d blocks \u4e2a\u5757\uff0c\u5757\u5927\u5c0f\u7b49\u4e8e ibs \u6307\u5b9a\u7684\u5b57\u8282\u6570\u3002<\/td><\/tr><tr><td>conv=conversion<\/td><td>\u7528\u6307\u5b9a\u7684\u53c2\u6570\u8f6c\u6362\u6587\u4ef6\uff1aascii\uff1a\u8f6c\u6362ebcdic\u4e3aascii\u3002ebcdic\uff1a\u8f6c\u6362ascii\u4e3aebcdic\u3002ibm\uff1a\u8f6c\u6362ascii\u4e3aalternate ebcdic\u3002block\uff1a\u628a\u6bcf\u4e00\u884c\u8f6c\u6362\u4e3a\u957f\u5ea6\u4e3acbs\uff0c\u4e0d\u8db3\u90e8\u5206\u7528\u7a7a\u683c\u586b\u5145\u3002unblock\uff1a\u4f7f\u6bcf\u4e00\u884c\u7684\u957f\u5ea6\u90fd\u4e3acbs\uff0c\u4e0d\u8db3\u90e8\u5206\u7528\u7a7a\u683c\u586b\u5145\u3002lcase\uff1a\u628a\u5927\u5199\u5b57\u7b26\u8f6c\u6362\u4e3a\u5c0f\u5199\u5b57\u7b26\u3002ucase\uff1a\u628a\u5c0f\u5199\u5b57\u7b26\u8f6c\u6362\u4e3a\u5927\u5199\u5b57\u7b26\u3002swab\uff1a\u4ea4\u6362\u8f93\u5165\u7684\u6bcf\u5bf9\u5b57\u8282\u3002noerror\uff1a\u51fa\u9519\u65f6\u4e0d\u505c\u6b62\u3002notrunc\uff1a\u4e0d\u622a\u77ed\u8f93\u51fa\u6587\u4ef6\u3002sync\uff1a\u5c06\u6bcf\u4e2a\u8f93\u5165\u5757\u586b\u5145ibs\u4e2a\u5b57\u8282\uff0c\u4e0d\u8db3\u90e8\u5206\u7528\u7a7a\uff08NUL\uff09\u5b57\u7b26\u8865\u9f50\u3002<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\/dev\/null\uff1a\u5916\u53f7\u53eb\u65e0\u5e95\u6d1e\uff0c\u4f60\u53ef\u4ee5\u5411\u5b83\u8f93\u51fa\u4efb\u4f55\u6570\u636e\uff0c\u5b83\u901a\u5403\uff0c\u5e76\u4e14\u4e0d\u4f1a\u6491\u7740\uff01<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\/dev\/zero\uff1a\u662f\u4e00\u4e2a\u8f93\u5165\u8bbe\u5907\uff0c\u4f60\u53ef\u4ee5\u7528\u5b83\u6765\u521d\u59cb\u5316\u6587\u4ef6\u3002\u8be5\u8bbe\u5907\u65e0\u7a77\u5c3d\u5730\u63d0\u4f9b0\uff0c\u53ef\u4ee5\u4f7f\u7528\u4efb\u4f55\u9700\u8981\u7684\u6570\u76ee\u2014\u2014\u8bbe\u5907\u63d0\u4f9b\u7684\u8981\u591a\u5f97\u591a\u3002\u5b83\u4e5f\u53ef\u4ee5\u7528\u4e8e\u5411\u8bbe\u5907\u6216\u6587\u4ef6\u5199\u5165\u5b57\u7b26\u4e320\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\/dev\/null\uff1a\u662f\u7a7a\u8bbe\u5907\uff0c\u4e5f\u79f0\u4e3a\u4f4d\u6876\uff08bit bucket\uff09\u3002\u4efb\u4f55\u5199\u5165\u5b83\u7684\u8f93\u51fa\u90fd\u4f1a\u88ab\u629b\u5f03\u3002\u5982\u679c\u4e0d\u60f3\u8ba9\u6d88\u606f\u4ee5\u6807\u51c6\u8f93\u51fa\u663e\u793a\u6216\u5199\u5165\u6587\u4ef6\uff0c\u90a3\u4e48\u53ef\u4ee5\u5c06\u6d88\u606f\u91cd\u5b9a\u5411\u5230\u4f4d\u6876\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u67e5\u770bdd\u62f7\u8d1d\u901f\u5ea6\uff1asudo watch -n -1 pkill -USR1 -x dd<\/p>\n","protected":false},"excerpt":{"rendered":"<p class=\"text-justify\">\u9009 \u9879 \u542b \u4e49 if=\u6587\u4ef6\u540d \u8f93\u5165\u6587\u4ef6\u540d\uff0c\u7f3a\u7701\u4e3a\u6807\u51c6\u8f93\u5165\uff0c\u5373\u6307\u5b9a\u6e90\u6587\u4ef6 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[8],"tags":[],"class_list":["post-38","post","type-post","status-publish","format-standard","hentry","category-8"],"_links":{"self":[{"href":"https:\/\/xiaoxiaoxiaoyu.com\/index.php?rest_route=\/wp\/v2\/posts\/38","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/xiaoxiaoxiaoyu.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/xiaoxiaoxiaoyu.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/xiaoxiaoxiaoyu.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/xiaoxiaoxiaoyu.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=38"}],"version-history":[{"count":4,"href":"https:\/\/xiaoxiaoxiaoyu.com\/index.php?rest_route=\/wp\/v2\/posts\/38\/revisions"}],"predecessor-version":[{"id":160,"href":"https:\/\/xiaoxiaoxiaoyu.com\/index.php?rest_route=\/wp\/v2\/posts\/38\/revisions\/160"}],"wp:attachment":[{"href":"https:\/\/xiaoxiaoxiaoyu.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=38"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/xiaoxiaoxiaoyu.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=38"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/xiaoxiaoxiaoyu.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=38"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}