System Administration Guide: Basic Administration

Determining a File System's Type

You can determine a file system's type by using the following:

The FS type field in the virtual file system table (/etc/vfstab file)
The /etc/default/fs file for local file systems
The /etc/dfs/fstypes file for NFS file systems

How to Determine a File System's Type

This procedure works whether the file system is mounted or not.

Determine a file system's type by using the grep command.

$ grep mount-point fs-table

`mount-point`	Specifies the mount point name of the file system for which you want to know the file system type. For example, the `/var` directory.
`fs-table`	Specifies the absolute path to the file system table in which to search for the file system's type. If the file system is mounted, `fs-table` should be `/etc/mnttab`. If the file system isn't mounted, `fs-table` should be `/etc/vfstab`.

Information for the mount point is displayed.

Note –

If you have the raw device name of a disk slice, you can use the fstyp command to determine a file system's type (if the disk slice contains a file system). For more information, see fstyp(1M).

Examples—Determining a File System's Type

The following example uses the /etc/vfstab file to determine the type of the /export file system.

$ grep /export /etc/vfstab
/dev/dsk/c0t3d0s6   /dev/rdsk/c0t3d0s6  /export ufs   2       yes    -
$

The following example uses the /etc/mnttab file to determine the file system type of the currently mounted diskette (which was mounted by vold).

$ grep /floppy /etc/mnttab
/vol/dev/diskette0/unnamed_floppy   /floppy/unnamed_floppy  pcfs rw,
nohidden,nofoldcase,dev=16c0009      89103376
$