特殊:Badtitle/NS100:Fstab

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Introduction

The configuration file /etc/fstab contains the necessary information to mount the disk. This file comes read at the start of the system and can be modified only by root user.

Content of file

It is possible to visualize this file with the following command:

cat /etc/fstab 

or alt-f2 and enter:

gksu gedit /etc/fstab 

The result of the previous command will be similar to following:

# /etc/fstab: static file system information.
#
# <file system> <mount point>   <type>  <options>       <dump>  <pass>

proc /proc proc defaults 0 0

# /dev/hda1
UUID=12102C02102CEB83 /media/windows  ntfs      silent,umask=0,locale=it_IT.utf8        0       0

# /dev/hda2
UUID=cee15eca-5b2e-48ad-9735-eae5ac14bc90 none swap sw 0 0

# /dev/hda3
UUID=98E0-6D24 /media/dati vfat defaults,utf8,umask=007,uid=0,gid=46,auto,rw,nouser 0 0

# /dev/hda4
UUID=0aa86c61-0df9-4f1a-8b0b-34abbee6b769 / ext3 nouser,defaults,errors=remount-ro,atime,auto,rw,dev,exec,suid 0 0

/dev/hdc /media/cdrom0 udf,iso9660 user,atime,noauto,rw,dev,exec,suid 0 0

Each no-commented line is composed by six fields:

fields	description
file system	it indicates the devices that contain a file system
mount point	it indicates the directory (or mount point) from which it will be possible to approach the content of the device (for the swap is not demanded the mount point)
type	type of file system
options	options of access to device (the command "mount")
dump	turn ON/OFF the backup of file system (the command "dump"). This option is obsolete.
pass	turn ON/OFF the control of coherence of the disc (the command "fsck")

To get a list of all the UUID's use this command:

ls -l /dev/disk/by-uuid

Other resources

• UUID
• http://doc.gwos.org/doku.php/doc:hardware:fstab