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du\u7edf\u8ba1\u7684\u539f\u7406<\/strong><\/strong><\/div>\n
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\n\u5982\u679c\u7edf\u8ba1\u76ee\u5f55\u4e0b\u6302\u8f7d\u4e86\u5176\u4ed6\u6587\u4ef6\u7cfb\u7edf\uff0c\u90a3\u4e48\u4e5f\u4f1a\u5bf9\u8fd9\u4e2a\u6587\u4ef6\u7cfb\u7edf\u8fdb\u884c\u7edf\u8ba1\u3002\u4f8b\u5982\"du -sh \/\"\u7684\u65f6\u5019\uff0c\u4f1a\u7edf\u8ba1\u6240\u6709\u5206\u533a\u7684\u6587\u4ef6\uff0c\u5305\u62ec\u6302\u8f7d\u4e0a\u6765\u7684\u3002\u6b63\u5982\u672c\u6587\u5f00\u5934\u7edf\u8ba1\u7684\"\/\"\u4e00\u6837\uff0cdu\u7684\u7ed3\u679c\u662f244G\uff0c\u660e\u663e\u6bd4df\u7edf\u8ba1\u7684\u7ed3\u679c\u5927\uff0c\u5c31\u662f\u56e0\u4e3a\u5c06\u67d0\u4e2a\u5206\u533a\u6302\u8f7d\u5230\u4e86\/mnt\u76ee\u5f55\u4e0b\u3002<\/p>\n
##\u00a0df\u7684\u7edf\u8ba1\u7ed3\u679c\r\n[root@xuexi\u00a0~]#\u00a0df\u00a0-hT\r\nFilesystem\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0Type\u00a0\u00a0\u00a0Size\u00a0\u00a0Used\u00a0Avail\u00a0Use%\u00a0Mounted\u00a0on\r\n\/dev\/sda2\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0ext4\u00a0\u00a0\u00a0\u00a018G\u00a0\u00a01.7G\u00a0\u00a0\u00a015G\u00a0\u00a011%\u00a0\/\r\ntmpfs\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0tmpfs\u00a0\u00a0491M\u00a0\u00a0\u00a0\u00a0\u00a00\u00a0\u00a0491M\u00a0\u00a0\u00a00%\u00a0\/dev\/shm\r\n\/dev\/sda1\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0ext4\u00a0\u00a0\u00a0239M\u00a0\u00a0\u00a068M\u00a0\u00a0159M\u00a0\u00a030%\u00a0\/boot\r\n\/\/192.168.0.124\/win\u00a0cifs\u00a0\u00a0\u00a0381G\u00a0\u00a0243G\u00a0\u00a0138G\u00a0\u00a064%\u00a0\/mnt\r\n##\u00a0du\u5bf9\u6839\u76ee\u5f55\u7684\u7edf\u8ba1\u7ed3\u679c\r\n[root@xuexi\u00a0~]#\u00a0du\u00a0-sh\u00a0\/\u00a0\u00a02><\/span>\/dev\/null\r\n244G\u00a0\u00a0\u00a0\u00a0\/\r\n<\/pre>\n
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\n\u53ef\u4ee5\u8de8\u5206\u533a\u7edf\u8ba1\u67d0\u4e9b\u4f60\u60f3\u7edf\u8ba1\u7684\u6587\u4ef6\u5927\u5c0f\u603b\u548c\u3002\u56e0\u4e3a\u5b83\u4eec\u90fd\u80fd\u88abstat\u627e\u5230\u5e76\u7edf\u8ba1\u3002\u4f8b\u5982\uff1a\u7edf\u8ba1Linux\u4e0b\u6240\u6709img\u6587\u4ef6\u7684\u5927\u5c0f\u3002<\/p>\n
##\u00a0df\u7684\u7edf\u8ba1\u7ed3\u679c\r\n[root@xuexi\u00a0~]#\u00a0find\u00a0\/\u00a0-type\u00a0f\u00a0-name\u00a0\"*.img\"\u00a0-print0\u00a0|\u00a0xargs\u00a0-0\u00a0du\u00a0-csh\r\n19M\u00a0\u00a0\u00a0\u00a0\u00a0\/boot\/initramfs-2.6.32-504.el6.x86_64.img\r\n13M\u00a0\u00a0\u00a0\u00a0\u00a0\/mnt\/linux\u5de5\u5177\/cirros-0.3.4-x86_64-disk.img\r\n31M\u00a0\u00a0\u00a0\u00a0\u00a0total<\/pre>\n
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df\u7edf\u8ba1\u7684\u539f\u7406<\/strong><\/strong><\/div>\n
df\u662f\u8bfb\u53d6\u6bcf\u4e2a\u5206\u533a\u7684superblock\u6765\u83b7\u53d6\u7a7a\u95f2\u6570\u636e\u5757\u3001\u5df2\u4f7f\u7528\u6570\u636e\u5757\uff0c\u4ece\u800c\u8ba1\u7b97\u51fa\u7a7a\u95f2\u7a7a\u95f4\u548c\u5df2\u4f7f\u7528\u7a7a\u95f4\uff0c\u56e0\u6b64df\u7edf\u8ba1\u7684\u901f\u5ea6\u6781\u5feb(superblock\u624d\u5360\u75281024\u5b57\u8282)\u3002
\n\u5f53\u67d0\u4e2a\u6587\u4ef6\u7cfb\u7edf\u4e0b\u6302\u8f7d\u4e86\u5176\u4ed6\u5206\u533a\uff0cdf\u4e0d\u4f1a\u628a\u8fd9\u4e2a\u5206\u533a\u4e5f\u7edf\u8ba1\u8fdb\u53bb\u3002\u8fd9\u5f88\u5bb9\u6613\u7406\u89e3\uff0c\u56e0\u4e3adf\u8bfb\u53d6\u7684\u662f\u5404\u81ea\u5206\u533a\u7684superblock\uff0c\u5373\u4f7f\u5206\u533a1\u6302\u8f7d\u5728\u5206\u533a0\u7684\u76ee\u5f55\u4e0b\uff0cdf\u7edf\u8ba1\u5206\u533a0\u7684\u65f6\u5019\uff0c\u4e5f\u53ea\u80fd\u8bfb\u53d6\u5206\u533a0\u7684superblock\u3002
\n\u4f8b\u5982\uff0c\u4e0b\u9762\u7684\/mnt\u3001\/boot\u90fd\u6ca1\u6709\u7edf\u8ba1\u5728\"\/\"\u4e2d\u3002<\/p>\n
[root@xuexi\u00a0~]#\u00a0df\u00a0-hT\r\nFilesystem\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0Type\u00a0\u00a0\u00a0Size\u00a0\u00a0Used\u00a0Avail\u00a0Use%\u00a0Mounted\u00a0on\r\n\/dev\/sda2\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0ext4\u00a0\u00a0\u00a0\u00a018G\u00a0\u00a01.7G\u00a0\u00a0\u00a015G\u00a0\u00a011%\u00a0\/\r\ntmpfs\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0tmpfs\u00a0\u00a0491M\u00a0\u00a0\u00a0\u00a0\u00a00\u00a0\u00a0491M\u00a0\u00a0\u00a00%\u00a0\/dev\/shm\r\n\/dev\/sda1\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0ext4\u00a0\u00a0\u00a0239M\u00a0\u00a0\u00a068M\u00a0\u00a0159M\u00a0\u00a030%\u00a0\/boot\r\n\/\/192.168.0.124\/win\u00a0cifs\u00a0\u00a0\u00a0381G\u00a0\u00a0243G\u00a0\u00a0138G\u00a0\u00a064%\u00a0\/mnt\r\n<\/pre>\n
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[root@xuexi\u00a0~]#\u00a0df\u00a0-hT\u00a0\/etc\/fstab\r\nFilesystem\u00a0\u00a0\u00a0\u00a0\u00a0Type\u00a0\u00a0Size\u00a0\u00a0Used\u00a0Avail\u00a0Use%\u00a0Mounted\u00a0on\r\n\/dev\/sda2\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0ext4\u00a0\u00a0\u00a018G\u00a0\u00a01.7G\u00a0\u00a0\u00a015G\u00a0\u00a011%\u00a0\/\r\n<\/pre>\n
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[root@xuexi\u00a0~]#\u00a0dd\u00a0if<\/span>=\/dev\/zero\u00a0of<\/span>=\/my.iso\u00a0bs<\/span>=1M<\/span>\u00a0count<\/span>=1000<\/span>\r\n[root@xuexi\u00a0~]#\u00a0df\u00a0-hT\u00a0\/\r\nFilesystem\u00a0\u00a0\u00a0\u00a0\u00a0Type\u00a0\u00a0Size\u00a0\u00a0Used\u00a0Avail\u00a0Use%\u00a0Mounted\u00a0on\r\n\/dev\/sda2\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0ext4\u00a0\u00a0\u00a018G\u00a0\u00a02.7G\u00a0\u00a0\u00a014G\u00a0\u00a017%\u00a0\/\r\n[root@xuexi\u00a0~]#\u00a0du\u00a0-sh\u00a0--exclude<\/span>=\"\/mnt\"<\/span>\u00a0\/\u00a02><\/span>\/dev\/null\r\n2.7G\u00a0\u00a0\u00a0\u00a0\/\r\n<\/pre>\n
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