Linux\u4e2dDD\u547d\u4ee4\u8be6\u89e3
\n1.dd\u547d\u4ee4\u7b80\u4ecb <\/p>\n
\u529f\u80fd\uff1a\u628a\u6307\u5b9a\u7684\u8f93\u5165\u6587\u4ef6\u62f7\u8d1d\u5230\u6307\u5b9a\u7684\u8f93\u51fa\u6587\u4ef6\u4e2d\uff0c\u5e76\u4e14\u5728\u62f7\u8d1d\u8fc7\u7a0b\u4e2d\u53ef\u4ee5\u8fdb\u884c\u683c\u5f0f\u8f6c\u6362\u3002\u53ef\u4ee5\u7528\u8be5\u547d\u4ee4\u5b9e\u73b0DOS\u4e0b\u7684diskcopy\u547d\u4ee4\u7684\u4f5c\u7528\u3002\u5148\u7528dd\u547d\u4ee4\u628a\u8f6f\u76d8\u4e0a\u7684\u6570\u636e\u5199\u6210\u786c\u76d8\u7684\u4e00\u4e2a\u5bc4\u5b58\u6587\u4ef6\uff0c\u518d\u628a\u8fd9\u4e2a\u5bc4\u5b58\u6587\u4ef6\u5199\u5165\u7b2c\u4e8c\u5f20\u8f6f\u76d8\u4e0a\uff0c\u5b8c\u6210diskcopy\u7684\u529f\u80fd\u3002\u9700\u8981\u6ce8\u610f\u7684\u662f\uff0c\u5e94\u8be5\u5c06\u786c\u76d8\u4e0a\u7684\u5bc4\u5b58\u6587\u4ef6\u7528rm\u547d\u4ee4\u5220\u9664\u6389\u3002\u7cfb\u7edf\u9ed8\u8ba4\u4f7f\u7528\u6807\u51c6\u8f93\u5165\u6587\u4ef6\u548c\u6807\u51c6\u8f93\u51fa\u6587\u4ef6\u3002 <\/p>\n
\u8bed\u6cd5\uff1add [\u9009\u9879] <\/p>\n
if =\u8f93\u5165\u6587\u4ef6\uff08\u6216\u8bbe\u5907\u540d\u79f0\uff09\u3002
\nof =\u8f93\u51fa\u6587\u4ef6\uff08\u6216\u8bbe\u5907\u540d\u79f0\uff09\u3002
\nibs = bytes \u4e00\u6b21\u8bfb\u53d6bytes\u5b57\u8282\uff0c\u5373\u8bfb\u5165\u7f13\u51b2\u533a\u7684\u5b57\u8282\u6570\u3002
\nskip = blocks \u8df3\u8fc7\u8bfb\u5165\u7f13\u51b2\u533a\u5f00\u5934\u7684ibs*blocks\u5757\u3002
\nobs = bytes \u4e00\u6b21\u5199\u5165bytes\u5b57\u8282\uff0c\u5373\u5199\u5165\u7f13\u51b2\u533a\u7684\u5b57\u8282\u6570\u3002
\nbs = bytes \u540c\u65f6\u8bbe\u7f6e\u8bfb\/\u5199\u7f13\u51b2\u533a\u7684\u5b57\u8282\u6570\uff08\u7b49\u4e8e\u8bbe\u7f6eibs\u548cobs\uff09\u3002
\ncbs = byte \u4e00\u6b21\u8f6c\u6362bytes\u5b57\u8282\u3002
\ncount=blocks \u53ea\u62f7\u8d1d\u8f93\u5165\u7684blocks\u5757\u3002
\nconv = ASCII \u628aEBCDIC\u7801\u8f6c\u6362\u4e3aASCIl\u7801\u3002
\nconv = ebcdic \u628aASCIl\u7801\u8f6c\u6362\u4e3aEBCDIC\u7801\u3002
\nconv = ibm \u628aASCIl\u7801\u8f6c\u6362\u4e3aalternate EBCDIC\u7801\u3002
\nconv = block \u628a\u53d8\u52a8\u4f4d\u8f6c\u6362\u6210\u56fa\u5b9a\u5b57\u7b26\u3002
\nconv = ublock \u628a\u56fa\u5b9a\u4f4d\u8f6c\u6362\u6210\u53d8\u52a8\u4f4d\u3002
\nconv = ucase \u628a\u5b57\u6bcd\u7531\u5c0f\u5199\u8f6c\u6362\u4e3a\u5927\u5199\u3002
\nconv = lcase \u628a\u5b57\u6bcd\u7531\u5927\u5199\u8f6c\u6362\u4e3a\u5c0f\u5199\u3002
\nconv = notrunc \u4e0d\u622a\u77ed\u8f93\u51fa\u6587\u4ef6\u3002
\nconv = swab \u4ea4\u6362\u6bcf\u4e00\u5bf9\u8f93\u5165\u5b57\u8282\u3002
\nconv = noerror \u51fa\u9519\u65f6\u4e0d\u505c\u6b62\u5904\u7406\u3002
\nconv = sync \u628a\u6bcf\u4e2a\u8f93\u5165\u8bb0\u5f55\u7684\u5927\u5c0f\u90fd\u8c03\u5230ibs\u7684\u5927\u5c0f\uff08\u7528NUL\u586b\u5145\uff09\u3002
\n2.\u5b9e\u4f8b\u5206\u6790
\n2.1.\u6570\u636e\u5907\u4efd\u4e0e\u6062\u590d
\n2.1.1\u6574\u76d8\u6570\u636e\u5907\u4efd\u4e0e\u6062\u590d
\n\u5907\u4efd\uff1a
\ndd if=\/dev\/hdx of=\/dev\/hdy
\n\u5c06\u672c\u5730\u7684\/dev\/hdx\u6574\u76d8\u5907\u4efd\u5230\/dev\/hdy<\/p>\n
dd if=\/dev\/hdx of=\/path\/to\/image
\n\u5c06\/dev\/hdx\u5168\u76d8\u6570\u636e\u5907\u4efd\u5230\u6307\u5b9a\u8def\u5f84\u7684image\u6587\u4ef6<\/p>\n
dd if=\/dev\/hdx | gzip >\/path\/to\/image.gz
\n\u5907\u4efd\/dev\/hdx\u5168\u76d8\u6570\u636e\uff0c\u5e76\u5229\u7528gzip\u5de5\u5177\u8fdb\u884c\u538b\u7f29\uff0c\u4fdd\u5b58\u5230\u6307\u5b9a\u8def\u5f84<\/p>\n
\u6062\u590d\uff1a
\ndd if=\/path\/to\/image of=\/dev\/hdx
\n\u5c06\u5907\u4efd\u6587\u4ef6\u6062\u590d\u5230\u6307\u5b9a\u76d8<\/p>\n
gzip -dc \/path\/to\/image.gz | dd of=\/dev\/hdx
\n\u5c06\u538b\u7f29\u7684\u5907\u4efd\u6587\u4ef6\u6062\u590d\u5230\u6307\u5b9a\u76d8<\/p>\n
2.1.2.\u5229\u7528netcat\u8fdc\u7a0b\u5907\u4efd<\/p>\n
dd if=\/dev\/hda bs=16065b | netcat < targethost-IP > 1234
\n\u5728\u6e90\u4e3b\u673a\u4e0a\u6267\u884c\u6b64\u547d\u4ee4\u5907\u4efd\/dev\/hda<\/p>\n
netcat -l -p 1234 | dd of=\/dev\/hdc bs=16065b
\n\u5728\u76ee\u7684\u4e3b\u673a\u4e0a\u6267\u884c\u6b64\u547d\u4ee4\u6765\u63a5\u6536\u6570\u636e\u5e76\u5199\u5165\/dev\/hdc<\/p>\n
netcat -l -p 1234 | bzip2 > partition.img
\n netcat -l -p 1234 | gzip > partition.img
\n\u4ee5\u4e0a\u4e24\u6761\u6307\u4ee4\u662f\u76ee\u7684\u4e3b\u673a\u6307\u4ee4\u7684\u53d8\u5316\u5206\u522b\u91c7\u7528bzip2 gzip\u5bf9\u6570\u636e\u8fdb\u884c\u538b\u7f29\uff0c\u5e76\u5c06\u5907\u4efd\u6587\u4ef6\u4fdd\u5b58\u5728\u5f53\u524d\u76ee\u5f55\u3002<\/p>\n
2.1.3.\u5907\u4efdMBR
\n\u5907\u4efd\uff1a<\/p>\n
dd if=\/dev\/hdx of=\/path\/to\/image count=1 bs=512
\n\u5907\u4efd\u78c1\u76d8\u5f00\u59cb\u7684512Byte\u5927\u5c0f\u7684MBR\u4fe1\u606f\u5230\u6307\u5b9a\u6587\u4ef6
\n
\n\u6062\u590d\uff1a<\/p>\n
dd if=\/path\/to\/image of=\/dev\/hdx
\n\u5c06\u5907\u4efd\u7684MBR\u4fe1\u606f\u5199\u5230\u78c1\u76d8\u5f00\u59cb\u90e8\u5206<\/p>\n
2.1.4.\u5907\u4efd\u8f6f\u76d8<\/p>\n
dd if=\/dev\/fd0 of=disk.img count=1 bs=1440k
\n\u5c06\u8f6f\u9a71\u6570\u636e\u5907\u4efd\u5230\u5f53\u524d\u76ee\u5f55\u7684disk.img\u6587\u4ef6<\/p>\n
2.1.5.\u62f7\u8d1d\u5185\u5b58\u8d44\u6599\u5230\u786c\u76d8<\/p>\n
dd if=\/dev\/mem of=\/root\/mem.bin bs=1024
\n\u5c06\u5185\u5b58\u91cc\u7684\u6570\u636e\u62f7\u8d1d\u5230root\u76ee\u5f55\u4e0b\u7684mem.bin\u6587\u4ef6<\/p>\n
2.1.6.\u4ece\u5149\u76d8\u62f7\u8d1diso\u955c\u50cf<\/p>\n
dd if=\/dev\/cdrom of=\/root\/cd.iso
\n\u62f7\u8d1d\u5149\u76d8\u6570\u636e\u5230root\u6587\u4ef6\u5939\u4e0b\uff0c\u5e76\u4fdd\u5b58\u4e3acd.iso\u6587\u4ef6 <\/p>\n
2.2.\u589e\u52a0Swap\u5206\u533a\u6587\u4ef6\u5927\u5c0f<\/p>\n
dd if=\/dev\/zero of=\/swapfile bs=1024 count=262144
\n\u521b\u5efa\u4e00\u4e2a\u8db3\u591f\u5927\u7684\u6587\u4ef6\uff08\u6b64\u5904\u4e3a256M\uff09<\/p>\n
mkswap \/swapfile
\n\u628a\u8fd9\u4e2a\u6587\u4ef6\u53d8\u6210swap\u6587\u4ef6<\/p>\n
swapon \/swapfile
\n\u542f\u7528\u8fd9\u4e2aswap\u6587\u4ef6<\/p>\n
\/swapfile swap swap defaults 0 0
\n\u5728\u6bcf\u6b21\u5f00\u673a\u7684\u65f6\u5019\u81ea\u52a8\u52a0\u8f7dswap\u6587\u4ef6, \u9700\u8981\u5728 \/etc\/fstab \u6587\u4ef6\u4e2d\u589e\u52a0\u4e00\u884c<\/p>\n
2.3.\u9500\u6bc1\u78c1\u76d8\u6570\u636e<\/p>\n
dd if=\/dev\/urandom of=\/dev\/hda1
\n\u5229\u7528\u968f\u673a\u7684\u6570\u636e\u586b\u5145\u786c\u76d8\uff0c\u5728\u67d0\u4e9b\u5fc5\u8981\u7684\u573a\u5408\u53ef\u4ee5\u7528\u6765\u9500\u6bc1\u6570\u636e\u3002\u6267\u884c\u6b64\u64cd\u4f5c\u4ee5\u540e\uff0c\/dev\/hda1\u5c06\u65e0\u6cd5\u6302\u8f7d\uff0c\u521b\u5efa\u548c\u62f7\u8d1d\u64cd\u4f5c\u65e0\u6cd5\u6267\u884c\u3002<\/p>\n
2.4\u78c1\u76d8\u7ba1\u7406<\/p>\n
2.4.1.\u5f97\u5230\u6700\u6070\u5f53\u7684block size<\/p>\n
dd if=\/dev\/zero bs=1024 count=1000000 of=\/root\/1Gb.file
\n dd if=\/dev\/zero bs=2048 count=500000 of=\/root\/1Gb.file
\n dd if=\/dev\/zero bs=4096 count=250000 of=\/root\/1Gb.file
\n dd if=\/dev\/zero bs=8192 count=125000 of=\/root\/1Gb.file
\n\u901a\u8fc7\u6bd4\u8f83dd\u6307\u4ee4\u8f93\u51fa\u4e2d\u6240\u663e\u793a\u7684\u547d\u4ee4\u6267\u884c\u65f6\u95f4\uff0c\u5373\u53ef\u786e\u5b9a\u7cfb\u7edf\u6700\u4f73\u7684block size\u5927\u5c0f<\/p>\n
2.4.2\u6d4b\u8bd5\u786c\u76d8\u8bfb\u5199\u901f\u5ea6<\/p>\n
dd if=\/root\/1Gb.file bs=64k | dd of=\/dev\/null
\n dd if=\/dev\/zero of=\/root\/1Gb.file bs=1024 count=1000000
\n\u901a\u8fc7\u4e0a\u4e24\u4e2a\u547d\u4ee4\u8f93\u51fa\u7684\u6267\u884c\u65f6\u95f4\uff0c\u53ef\u4ee5\u8ba1\u7b97\u51fa\u6d4b\u8bd5\u786c\u76d8\u7684\u8bfb\uff0f\u5199\u901f\u5ea6 <\/p>\n
2.4.3.\u4fee\u590d\u786c\u76d8<\/p>\n
dd if=\/dev\/sda of=\/dev\/sda
\n\u5f53\u786c\u76d8\u8f83\u957f\u65f6\u95f4\uff08\u6bd4\u59821\uff0c2\u5e74\uff09\u653e\u7f6e\u4e0d\u4f7f\u7528\u540e\uff0c\u78c1\u76d8\u4e0a\u4f1a\u4ea7\u751fmagnetic flux point\u3002\u5f53\u78c1\u5934\u8bfb\u5230\u8fd9\u4e9b\u533a\u57df\u65f6\u4f1a\u9047\u5230\u56f0\u96be\uff0c\u5e76\u53ef\u80fd\u5bfc\u81f4I\/O\u9519\u8bef\u3002\u5f53\u8fd9\u79cd\u60c5\u51b5\u5f71\u54cd\u5230\u786c\u76d8\u7684\u7b2c\u4e00\u4e2a\u6247\u533a\u65f6\uff0c\u53ef\u80fd\u5bfc\u81f4\u786c\u76d8\u62a5\u5e9f\u3002\u4e0a\u8fb9\u7684\u547d\u4ee4\u6709\u53ef\u80fd\u4f7f\u8fd9\u4e9b\u6570\u636e\u8d77\u6b7b\u56de\u751f\u3002\u4e14\u8fd9\u4e2a\u8fc7\u7a0b\u662f\u5b89\u5168\uff0c\u9ad8\u6548\u7684\u3002<\/p>\n
2.4.4.\u8f6f\u76d8\u62f7\u8d1d<\/p>\n
\u8981\u628a\u4e00\u5f20\u8f6f\u76d8\u7684\u5185\u5bb9\u62f7\u8d1d\u5230\u53e6\u4e00\u5f20\u8f6f\u76d8\u4e0a\uff0c\u5229\u7528\/tmp\u4f5c\u4e3a\u4e34\u65f6\u5b58\u50a8\u533a\u3002\u628a\u6e90\u76d8\u63d2\u5165\u9a71\u52a8\u5668\u4e2d\uff0c\u8f93\u5165\u4e0b\u8ff0\u547d\u4ee4\uff1a <\/p>\n
$ dd if =\/dev\/fd0 of = \/tmp\/tmpfile <\/p>\n
\u62f7\u8d1d\u5b8c\u6210\u540e\uff0c\u5c06\u6e90\u76d8\u4ece\u9a71\u52a8\u5668\u4e2d\u53d6\u51fa\uff0c\u628a\u76ee\u6807\u76d8\u63d2\u5165\uff0c\u8f93\u5165\u547d\u4ee4\uff1a <\/p>\n
$ dd if = \/tmp\/tmpfile of =\/dev\/fd0 <\/p>\n
\u8f6f\u76d8\u62f7\u8d1d\u5b8c\u6210\u540e\uff0c\u5e94\u8be5\u5c06\u4e34\u65f6\u6587\u4ef6\u5220\u9664\uff1a <\/p>\n
\n\t$ rm \/tmp\/tmpfile \n<\/p>\n
\n\t\n<\/p>\n
2.4.5.\u628anet.i\u8fd9\u4e2a\u6587\u4ef6\u5199\u5165\u8f6f\u76d8\u4e2d\uff0c\u5e76\u8bbe\u5b9a\u8bfb\/\u5199\u7f13\u51b2\u533a\u7684\u6570\u76ee\u3002 <\/p>\n
\uff08\u6ce8\u610f\uff1a\u8f6f\u76d8\u4e2d\u7684\u5185\u5bb9\u4f1a\u88ab\u5b8c\u5168\u8986\u76d6\u6389\uff09 <\/p>\n
$ dd if = net.i of = \/dev\/fd0 bs = 16384 <\/p>\n
2.4.6.\u5c06\u6587\u4ef6sfile\u62f7\u8d1d\u5230\u6587\u4ef6 dfile\u4e2d\u3002 <\/p>\n
$ dd if=sfile of=dfile<\/p>\n","protected":false},"excerpt":{"rendered":"
Linux\u4e2dDD\u547d\u4ee4\u8be6\u89e3 1.dd\u547d\u4ee4\u7b80\u4ecb […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[14],"class_list":["post-130","post","type-post","status-publish","format-standard","hentry","category-Technical_literature","tag-linux"],"views":1568,"_links":{"self":[{"href":"https:\/\/www.datarelab.com\/blog\/wp-json\/wp\/v2\/posts\/130","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.datarelab.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.datarelab.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.datarelab.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.datarelab.com\/blog\/wp-json\/wp\/v2\/comments?post=130"}],"version-history":[{"count":0,"href":"https:\/\/www.datarelab.com\/blog\/wp-json\/wp\/v2\/posts\/130\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.datarelab.com\/blog\/wp-json\/wp\/v2\/media?parent=130"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.datarelab.com\/blog\/wp-json\/wp\/v2\/categories?post=130"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.datarelab.com\/blog\/wp-json\/wp\/v2\/tags?post=130"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}