The file system remains one of the most important parts of the operating system to the end user. The file manager is the system software which is responsible the creation, deletion and modification of files on the computer system. Closely related to this responsibility is that of management of access, security features and resource management of the files.
To explain three responsibilities that an operating system has for file management in a computer system:
1. Keeping track of files: The file manager keeps a record of files on the computer system through directories and file names stored on the filesystem.
2. Access control: The file manager controls access to files on the filesystem. Only users with the right permissions and rights are able to access files stored on the computer system.
3. Policies for how files are stored and retrieved: The file manager uses a set of operating system policies to determine where and how files are to be stored on the filesystem for fast retrieval.
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