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           #include <fstab.h>


           The  file fstab contains descriptive information about the various file
           systems.  fstab is only read by programs, and not written;  it  is  the
           duty  of  the system administrator to properly create and maintain this
           file.  Each filesystem is described on a separate line; fields on  each
           line are separated by tabs or spaces.  Lines starting with '#' are com-
           ments. blank lines are ignored.  The  order  of  records  in  fstab  is
           important because fsck(8), mount(8), and umount(8) sequentially iterate
           through fstab doing their thing.
           The first field, (fs_spec),  describes  the  block  special  device  or
           remote filesystem to be mounted.
           For  ordinary  mounts  it  will hold (a link to) a block special device
           node (as created by mknod(8))  for  the  device  to  be  mounted,  like
           '/dev/cdrom'   or   '/dev/sdb7'.    For   NFS   mounts  one  will  have
           <host>:<dir>, e.g., ''.  For procfs, use 'proc'.
           Instead of giving the device explicitly, one may indicate the (ext2  or
           xfs)  filesystem that is to be mounted by its UUID or volume label (cf.
           e2label(8) or  xfs_admin(8)),  writing  LABEL=<label>  or  UUID=<uuid>,
           e.g.,   'LABEL=Boot'   or  'UUID=3e6be9de-8139-11d1-9106-a43f08d823a6'.
           This will make the system more robust: adding or removing a  SCSI  disk
           changes the disk device name but not the filesystem volume label.
           The second field, (fs_file), describes the mount point for the filesys-
           tem.  For swap partitions, this field should be specified as 'none'. If
           the  name  of  the  mount point contains spaces these can be escaped as
           The third field, (fs_vfstype), describes the type  of  the  filesystem.
           Linux  supports  lots  of filesystem types, such as adfs, affs, autofs,
           coda, coherent, cramfs, devpts, efs, ext2, ext3,  hfs,  hpfs,  iso9660,
           jfs,  minix,  msdos,  ncpfs,  nfs,  ntfs,  proc, qnx4, reiserfs, romfs,
           smbfs, sysv, tmpfs, udf, ufs, umsdos, vfat, xenix,  xfs,  and  possibly
           others.  For more details, see mount(8).  For the filesystems currently
           supported by the running kernel, see /proc/filesystems.  An entry  swap
           denotes a file or partition to be used for swapping, cf. swapon(8).  An
           entry ignore causes the line to be ignored.  This  is  useful  to  show
           disk  partitions  which  are currently unused.  An entry none is useful
           for bind or move mounts.
           mount(8) and umount(8) support  filesystem  subtypes.  The  subtype  is
           defined  by  '.subtype'  suffix.  For example 'fuse.sshfs'. It's recom-
           mended to use subtype notation rather than add any prefix to the  first
           fstab field (for example '' is depreacated).
           The  fourth  field, (fs_mntops), describes the mount options associated
           with the filesystem.
           the  fifth  field  is not present, a value of zero is returned and dump
           will assume that the filesystem does not need to be dumped.
           The sixth field, (fs_passno), is used by the fsck(8) program to  deter-
           mine the order in which filesystem checks are done at reboot time.  The
           root filesystem should be specified with a fs_passno of  1,  and  other
           filesystems  should  have a fs_passno of 2.  Filesystems within a drive
           will be checked sequentially, but filesystems on different drives  will
           be  checked  at  the  same time to utilize parallelism available in the
           hardware.  If the sixth field is not present or zero, a value  of  zero
           is  returned  and fsck will assume that the filesystem does not need to
           be checked.
           The proper way to read records from fstab is to use the routines getmn-




           getmntent(3), mount(8), swapon(8), fs(5), nfs(5)


           The ancestor of this fstab file format appeared in 4.0BSD.


           This  man  page  is  part of the util-linux-ng package and is available

    Linux 2.2 15 June 1999 FSTAB(5)


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