FSTYP(1M)            INTERACTIVE UNIX System            FSTYP(1M)



          NAME
               fstyp - determine file system identifier

          SYNOPSIS
               fstyp special

          DESCRIPTION
               The fstyp command allows the user to determine the file sys-
               tem identifier of mounted or unmounted file systems using
               heuristic programs. The file system type is required by
               mount(2) and sometimes by mount(1M) to mount file systems of
               different types.

               The directory /etc/fstyp.d contains a program for each file
               system type to be checked; each of these programs applies
               some appropriate heuristic to determine whether the supplied
               special file is of the type for which it checks.  If it is,
               the program prints on standard output the usual file-system
               identifier for that type and exits with a return code of 0;
               otherwise it prints error messages on standard error and
               exits with a non-zero return code. fstyp runs the programs
               in /etc/fstyp.d in alphabetical order, passing special as an
               argument; if any program succeeds, its file-system type
               identifier is printed and fstyp exits immediately. If no
               program succeeds, fstyp prints "Unknown_fstyp" to indicate
               failure.

          WARNING
               The use of heuristics implies that the result of fstyp is
               not guaranteed to be accurate.

          SEE ALSO
               mount(1M).
               mount(2), sysfs(2) in the INTERACTIVE SDS Guide and
               Programmer's Reference Manual.




















          Rev. Base System                                           Page 1