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14. File Systems > Single Directory Hierarchy and Mount Points

Single Directory Hierarchy and Mount Points

On Linux, as on other UNIX systems, all files from all file systems reside under a single directory tree. At the base of this tree is the root directory, / (slash). Other file systems are mounted under the root directory and appear as subtrees within the overall hierarchy. The superuser uses a command of the following form to mount a file system:

$ mount device directory

This command attaches the file system on the named device into the directory hierarchy at the specified directory—the file system’s mount point. It is possible to change the location at which a file system is mounted—the file system is unmounted using the umount command, and then mounted once more at a different point.


  

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