(usually given in a bootscript) causes all filesystems mentioned fstab path command-line option (see below for more details). Theĭefault location of the fstab(5) file can be overridden with the What devices are usually mounted where, using which options. The file /etc/fstab (see fstab(5)), may contain lines describing
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The files /etc/fstab, /etc/mtab and /proc/mounts None is less fortunate: the error message 'none already mounted' When mounting it, an arbitrary keyword - for example, proc - canīe used instead of a device specification. The proc filesystem is not associated with a special device, and Symlinks in /etc/fstab has no advantage over tags. The mount(8) command internally uses udev symlinks, so the use of Tags are more readable, robust and portable. The recommended setup is to use tags (e.g. Use lsblk -o +UUID,PARTUUID to verify that the UUIDs are really Really unique, especially if you move, share or copy the device. The command blkid -p provides details about a filesystem on the specifiedĭon’t forget that there is no guarantee that UUIDs and labels are LABELs and UUIDs on available block devices. The command lsblk -fs provides an overview of filesystems, Generic use as the identifier is not strictly defined and itĭepends on udev, udev rules and hardware. See ls /dev/disk/by-id for more details, this directory and running Identifier) and assigned by the hardware manufacturer. Identifier is usually based on WWN (unique storage Hardware block device ID as generated by udevd. Independent on filesystem and does not change by mkfs or Should be based on lower case characters. The UUIDs from theĬommand line or from fstab(5) are not converted to internalīinary representation.
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UUID is usually a series of hex digits separated by hyphens. See also -L.įilesystem universally unique identifier. Recommended to use filesystem or partition identifiers like UUID Reconfiguration, and adding or removing a device can causeĬhanges in names. The device names of disk partitions are unstable hardware ForĮxample, in the case of an NFS mount, device may look like Most devices are indicated by a filename (of a block specialĭevice), like /dev/sda1, but there are other possibilities. The option -l adds labels to this listing. The following command lists all mounted filesystems (of type The listing mode is maintained for backward compatibility only.įor more robust and customizable output use findmnt(8),Įspecially in your scripts. The exception is -all, in this caseĪlready mounted filesystems are ignored (see -all below for more
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Allīehavior is controlled by the kernel and it is usually specific The mount commandĭoes not implement any policy to control this behavior.
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Mounted on the same mountpoint multiple times. The same filesystem may be mounted more than once, and in someĬases (e.g., network filesystems) the same filesystem may be Or -source options to avoid ambiguous interpretation of the Then mount looks for a mountpoint (and if not found then for aĭevice) in the /etc/fstab file. If only the directory or the device is given, for example: Remains mounted, the pathname dir refers to the root of the Mode of dir become invisible, and as long as this filesystem The previous contents (if any) and owner and See section "Non-superuser mounts" belowįor more details. The root permissions are necessary to mount aįilesystem by default. The mount command is usually able to detect aįilesystem. (which is of type type) at the directory dir. This tells the kernel to attach the filesystem found on device The standard form of the mount command is: Virtual way by network or other services. Used to control how data is stored on the device or provided in a The umount(8) command will detach it again. The mount command serves to attach theįilesystem found on some device to the big file tree. Mount device| mountpoint mount device mountpoint mount -bind| -rbind| -move olddir newdir mount -make-Īll files accessible in a Unix system are arranged in one big MOUNT(8) System Administration MOUNT(8) NAME top