We live in the data age. It's not easy to measure the total volume of data stored electronically , but the International Data Corporat...
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An essay on file permission in UNIX
Chmod is the name of Unix-Shell command and a system call, which both change the permission of the file system(including files and director...
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The Procedure of Reading the Data from the Data-Node
The client sends an open request to the Name-Node. The open request contains the name of the file that the client wants to open. The name...
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