File System for B.SC. IT SEM-II
File System:
In computing, a file system is a method for storing and organizing computer files and the data they contain to make it easy to find and access them. File systems may use a data storage device such as a hard disk or CD-ROM and involve maintaining the physical location of the files, they might provide access to data on a file server by acting as clients for a network protocol (e.g., NFS, SMB, or 9P clients), or they may be virtual and exist only as an access method for virtual data (e.g., procfs). Different File Attributes : A file’s attributes vary from one operating system to another but typically consist of these :
• Name : The symbolic file name is the only information kept in human readable form.
• Identifier : This unique tag, usually a number , identifies the file within the file system; it is non-human-readable name for the file.
• Type : This information is needed for systems that support different types of files.
• Location : This information is a pointer to a device and to the location of the file on that device.
• Size : The current size of the file and possibly the maximum allowed size are included in this attribute.
• Protection : Access-control information determines who can do reading, writing, executing and so on.
• Time ,Date, and user identification : This information may be kept for creation, last modification, and last use.