The contents are up to the system administrator. The configuration file for file . Contains the descriptions of various file formats based on which file guesses the type of the file. See the magic and file manual pages for more information. The message of the day, automatically output after a successful login.
Contents are up to the system administrator.
Often used for getting information to every user, such as warnings about planned downtimes. Initially set up by the bootup scripts, and updated automatically by the mount command. Used when a list of mounted filesystems is needed, e.g., by the df command. This makes it harder to crack passwords. Files executed at login or startup time by the Bourne or C shells.