Group option is similar, with the restriction that the user must be member of the group of the special file.
for /dev/fd if a login script makes the console user owner of this device. The owner option is similar to the user option, with the restriction that the user If any user should be able to unmount, then use Only the user that mounted a filesystem can unmount it again. Mount /cd For more details, see fstab(5). dev/cdrom /cd iso9660 ro,user,noauto,unhide any user can mount the iso9660 filesystem found on his CDROM using the command However, when fstab contains the user option on a line, anybody can mount the Normally, only the superuser can mount filesystems. Symlink, but some information is lost that way, and in particular using the "user" option will fail. etc/mtab by a symbolic link to /proc/mounts, and especially when you have very large numbers of mounts things will be much faster with that Has somewhat more information, such as the mount options used, but is not necessarily up-to-date (cf. When the proc filesystem is mounted (say at /proc), the files /etc/mtab and /proc/mounts have very similar contents. Wins if there is more duplicated options. The usual behaviour is that the last option Mount device|dir -o and then the mount options from command line will be appended to the list of options from /etc/fstab. Mount /dev/foo /dir If you want to override mount options from /etc/fstab you have to use: The mount program does not read the /etc/fstab file if device (or LABEL/UUID) and dir are specified. The programs mount and umount maintain a list of currently mounted filesystems in the file /etc/mtab. When mounting a filesystem mentioned in fstab or mtab, it suffices to give only the device, or only the mount point.
Adding the -F option will make mount fork, so that the filesystems Mounted as indicated, except for those whose line contains the noauto keyword. (usually given in a bootscript) causes all filesystems mentioned in fstab (of the proper type and/or having or not having the proper options) to be The file /etc/fstab (see fstab(5)), may contain lines describing what devices are usually mounted where, using which options. The /etc/fstab, /etc/mtab and /proc/mounts files. (The customary choice none is less fortunate: the error message 'none busy' from umount can be confusing.) The proc filesystem is not associated with a special device, and when mounting it, an arbitrary keyword, such as proc can be used instead of aĭevice specification. The mount(8) command internally uses udev symlinks, so use the symlinks in /etc/fstab is not advantage The tags are more readable, robust and portable. The recommended setup is to use LABEL= or UUID= tags rather than /dev/disk/by- udev symlinks in the /etc/fstabįile. It is possible to indicate a block special device using its volume LABEL or For example, in the case ofĪn NFS mount, device may look like :/dir. Most devices are indicated by a file name (of a block special device), like /dev/sda1, but there are other possibilities. The option -l adds the labels in this listing. Lists all mounted filesystems (of type type). Three forms of invocation do not actually mount anything: The previous contents (ifĪny) and owner and mode of dir become invisible, and as long as this filesystem remains mounted, the pathname dir refers to the root of the Mount -t type device dir This tells the kernel to attach the filesystem found on device (which is of type type) at the directory dir. The standard form of the mount command, is The mount command serves to attach the filesystem found on some device to the big file tree. These files can be spread out over severalĭevices. All files accessible in a Unix system are arranged in one big tree, the file hierarchy, rooted at /.
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