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Managing filesystem types

Identifying the type of an unmounted filesystem

Most commands that are used in filesystem administration require that the filesystem type be provided on the command line or in the filesystem table. Most of these commands also attempt to distinguish the type of a filesystem by themselves, so if the administrator provides the wrong type the command might fail. It is important to specify the correct type because filesystems can be damaged if a command fails to detect an administrator's error and an operation applicable only to one type of filesystem is applied to another.

At times, an administrator will need to determine the type of an unmounted filesystem either because the vfstab file contains outdated information or because it contains no information at all. The command fstyp(1M) uses certain methods to determine the type of an unmounted filesystem. fstyp determines and displays the filesystem type on standard output. If the type cannot be determined, the message Unknown_fstyp (no matches) appears as standard error output.


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UnixWare 7 Release 7.1.4 - 22 April 2004