NAME mount, umount - mount or unmount file systems and remote resources SYNOPSIS mount [ -p | -v ] mount [ -F FSType ] [ generic_options ] [ -o specific_options ] [ -O ] special | mount_point mount [ -F FSType ] [ generic_options ] [ -o specific_options ] [ -O ] special mount_point mount -a [ -F FSType ] [ -V ] [ current_options ] [ -o specific_options ] [ mount_point. . . ] umount [ -V ] [ -o specific_options ] special | mount_point umount -a [ -V ] [ -o specific_options ] [ mount_point. . . ] AVAILABILITY SUNWcsu DESCRIPTION mount attaches a file system to the file system hierarchy at the mount_point, which is the pathname of a directory. If mount_point has any contents prior to the mount operation, these are hidden until the file system is unmounted. umount unmounts a currently mounted file system, which may be specified either as a mount_point or as special, the dev- ice on which the file system resides. mount and umount maintain a table of mounted file systems in /etc/mnttab, which is described in mnttab(4). mount adds an entry to the mount table; umount removes an entry from the table. When invoked with both the special and mount_point arguments and the -F option, mount validates all arguments except for special and invokes the appropriate FSType-specific mount module. If invoked with no arguments, mount lists all the mounted file systems recorded in the mount table, /etc/mnttab. If invoked with a partial argument list (with only one of special or mount_point, or with both special or mount_point specified but not FSType), mount will search /etc/vfstab for an entry that will supply the missing argu- ments. If no entry is found, and the special argument starts with "/", the default local file system type specified in /etc/default/fs will be used. Otherwise the default remote file system type will be used. The default remote file sys- tem type is determined by the first entry in the /etc/dfs/fstypes file. After filling in missing arguments, mount will invoke the FSType-specific mount module. Only a super-user can mount or unmount file systems using mount and umount. However, any user can use mount to list mounted file systems and resources. OPTIONS -F FSType Used to specify the FSType on which to operate. The FSType must be specified or must be determinable from /etc/vfstab, or by con- sulting /etc/default/fs or /etc/dfs/fstypes. -a [ mount_points. . . ] Perform mount or umount operations in paral- lel, when possible. If mount points are not specified, mount will mount all file systems whose /etc/vfstab "mount at boot" field is "yes". If mount points are specified, then /etc/vfstab "mount at boot" field will be ignored. If mount points are specified, umount will only umount those mount points. If none is specified, then umount will attempt to umount all filesystems in /etc/mnttab, with the exception of certain system required file systems: /, /usr, /var, /proc, /dev/fd, and /tmp. -p Print the list of mounted file systems in the /etc/vfstab format. Must be the only option specified. -v Print the list of mounted file systems in verbose format. Must be the only option specified. -V Echo the complete command line, but do not execute the command. umount generates a com- mand line by using the options and arguments provided by the user and adding to them information derived from /etc/mnttab. This option should be used to verify and validate the command line. generic_options Options that are commonly supported by most FSType-specific command modules. The follow- ing options are available: -m Mount the file system without mak- ing an entry in /etc/mnttab. -r Mount the file system read-only. -o Specify FSType-specific options in a comma separated (without spaces) list of suboptions and keyword-attribute pairs for interpreta- tion by the FSType-specific module of the command. (See mount_ufs(1M)) -O Overlay mount. Allow the file system to be mounted over an existing mount point, making the underlying file system inaccessible. If a mount is attempted on a pre-existing mount point without setting this flag, the mount will fail, producing the error "device busy". FILES /etc/mnttab mount table /etc/default/fs default local file system type. Default values can be set for the following flags in /etc/default/fs. For example: LOCAL=ufs LOCAL: The default partition for a command if no FSType is speci- fied. /etc/vfstab list of default parameters for each file sys- tem. SEE ALSO mount_cachefs(1M), mount_hsfs(1M), mount_nfs(1M), mount_pcfs(1M), mount_tmpfs(1M), mount_ufs(1M), mountall(1M), umountall(1M), setmnt(1M), mnttab(4), vfstab(4), lofs(7FS), pcfs(7FS) NOTES If the directory on which a file system is to be mounted is a symbolic link, the file system is mounted on the directory to which the symbolic link refers, rather than on top of the symbolic link itself.