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Solaris™ Internals: Core Kernel Components by Richard McDougall, Jim Mauro

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12.2. Support for Multiple File System Types

Solaris provides a flexible framework that allows multiple and different file system types within the environment. The most common file system is the Unix file system (UFS), which is used by default to hold all of the files in the root directory hierarchy of the Unix file system. UFS is known as an “on disk” or “regular” file system, which means that it uses a storage device to hold real file data.

In contrast, there are also file systems that look like regular file systems but represent virtual devices. These are known as pseudo file systems. For example, in Solaris the list of processes can be mounted as a file system and each process appears as a file. The Solaris pseudo file systems represent processes, ...

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