fstab(5)							File Formats Manual							  fstab(5)

Name
       fstab - file containing static information about known file systems

Description
       The  file  contains  descriptive information about the known file systems.  By convention, is created and maintained as a read-only file by
       the system administrator.  Each file system is described by its own line within The order of these lines and the file systems  they  repre-
       sent is important because and sequentially process in the performance of their tasks.

       The format of each file system description in is as follows:
       spec:file:type:freq:passno:name:options
       The meanings of these fields are:

       spec	 The block special file name of the device on which the file system is located.  It can also be a network name for such as or

       file	 The pathname of the directory on which the file system is mounted.

       type	 How the file system is mounted.  The ways in which a file system can be mounted are:
		 rw - mount the file system read-write
		 ro - mount the file system read only
		 rq - mount the file system read-write with quotas
		 sw - make the special file part of the swap space
		 xx - ignore the entry

       freq	 The frequency (in days) with which the command dumps the rw, ro, and rq file systems.

       passno	 The order in which the command checks the rw, ro, and rq file systems at reboot time.

       name	 The  name  of	the file system type.  File systems can have the following types: ufs -- ULTRIX file system and nfs -- SUN Network
		 file system.

       options	 The options field.  This field contains an arbitrary string meaningful only when mounting file systems with  the  specified  file
		 system type name, such as NFS.  The specific options are described in the reference pages.

       Special	actions  occur for file systems of type sw and rq at system boot time.	File systems of type sw are made part of the swap space by
       the command and disk quotas are automatically processed by the command and then enabled by the command for rq file systems.

Examples
       Here is a sample file:
       /dev/ra0a:/:rw:1:1:ufs::
       /dev/ra1g:/usr:rw:1:2:ufs::
       /@bigvax:/bigvax:rw:0:0:nfs::
       /usr/uws2.0@bigvax:/usr/uws2.0:rw:0:0:nfs:soft,bg,nosuid:
       /usr/dec@bigvax:/usr/dec:rw:0:0:nfs:bg,soft,nosuid:
       /usr/pro/xyz@vax:/usr/pro/xyz:rw:0:0:nfs:bg,soft,intr,nosuid:
       The last three entries in the sample shown use NFS options as described in the reference page.

Restrictions
       The passno field of the root file system should be specified as 1.  Other file systems should have larger values.  File systems on the same
       device  should  have  distinct  passno  fields.	File systems on different devices may have the identical passno fields to allow them to be
       simultaneously checked.

       All field delimiters (:) must exist within each file system description; only the options field may not	be  present.   However,  only  the
       fields spec and type are meaningful to sw file systems and only the type field is meaningful to xx file systems.

       The file system description within should be parsed only through use of the routines.

Files
       File system information file

See Also
       getfsent(3x), dump(8), fsck(8), mount(8), mount(8nfs), mount(8ufs) quotacheck(8), quotaon(8), swapon(8)

																	  fstab(5)