File Attributes(see Fig. 4)

Figure 4: Some possible file attributes.

• Information about files kept in directory structure maintained on disk
• Each file is associated with a collection of information, known as attributes:
  • name, owner, creator, only information in human-readable form
  • type, (e.g., source, data, binary) needed if system supports different types
  • location, (e.g., I-node or disk address) pointer to file location on device
  • organization, (e.g., sequential, indexed, random)
  • time and date, (creation, modification, and last accessed)
  • size, current file size
  • protection, who can do reading, writing, executing
  • variety of other (e.g., maintenance) information.