fsck(1M)                                                    fsck(1M)


       NAME
             fsck (generic) - check and repair file systems

       SYNOPSIS
             fsck [-F FSType] [-V] [-m] [special . . .]
             fsck [-F FSType] [-V] [current_options] [-o specific_options] [special . . .]
             fsck [-F FSType] [-V] [-PLbyw] [special . . .]

       DESCRIPTION
             fsck audits and interactively repairs inconsistent conditions
             for file systems.  If the file system is inconsistent the user
             is prompted for concurrence before each correction is
             attempted.  It should be noted that some corrective actions
             will result in some loss of data.  The amount and severity of
             data loss may be determined from the diagnostic output.  The
             default action for each correction is to wait for the user to
             respond yes or no.

             The file system should be unmounted when fsck is used.  If
             this is not possible, care should be taken that the system is
             quiescent and that it is rebooted immediately afterwards if
             the file system is a critical one, for example root.

             current_options are options supported by the s5-specific
             module of fsck.  Other FSTypes do not necessarily support
             these options.  specific_options indicate suboptions specified
             in a comma-separated list of suboptions and/or keyword-
             attribute pairs for interpretation by the FSType-specific
             module of the command.

             special represents a block or character special device (for
             example, /dev/rdsk/*, where the value of * is machine
             dependent).  It is preferable that a character special device
             be used.  fsck will not work on a block device if it is
             mounted.  If special is not supplied, fsck looks through
             /etc/vfstab and executes fsck for all character specials in
             the fsckdev field of /etc/vfstab for which there is a numeric
             entry in the fsckpass field.

             The options are:

             -F        Specify the FSType on which to operate.  If you are
                       uncertain about the FSType, use the fstyp command to
                       determine it, rather than looking it up in the
                       vfstab file.



                           Copyright 1994 Novell, Inc.               Page 1

      fsck(1M)                                                    fsck(1M)


            -V        Echo the complete command line, but do not execute
                      the command.  The command line is generated by using
                      the options and arguments provided by the user and
                      adding to them information derived from /etc/vfstab.
                      This option should be used to verify and validate
                      the command line.

            -m        Check but don't repair.  This option checks that the
                      file system is suitable for mounting.

            -o        Specify FSType-specific options.

            -P        Automatically audits and interactively repairs
                      inconsistent conditions for all filesystems in
                      /etc/vfstab in parallel. It uses the fsckpass field
                      of /etc/vfstab to create a list of filesystems that
                      need checking on separate disks. The filesystems are
                      then scheduled for checking such that each disk has
                      one filesystem being checked on that disk at a given
                      time.  -P supports the following suboptions:

                 -L    Requests that the ouput is arranged in order by
                       filesystem.

                 -b    Prints the filesystem output in a brief terse
                       format. Upon success, the command prints one line,
                       per filesystem, which is a summary of fsck
                       information.

                 -y    Assumes a "yes" response to all questions, and the
                       interactive mode is circumvented.

                 -w    Averts confusion stemming from several different
                       filesystems requesting interactive responses. Runs
                       as expected upon success (either verbose or brief).
                       If it fails, the parent fsck process collects the
                       failure information, but defers any corrections
                       until the rest of the filesystems have been
                       checked.

      NOTE
            This command may not be supported for all FSTypes.

      FILES




                          Copyright 1994 Novell, Inc.               Page 2

       fsck(1M)                                                    fsck(1M)


             /etc/vfstab       list of default parameters for each file system

       REFERENCES
             bfs-specific fsck(1M_BFS), s5-specific fsck(1M_S5), sfs-
             specific fsck(1M_SFS), ufs-specific fsck(1M_UFS), vxfs-
             specific fsck(1M_VXFS), fsck(1M_XNX), mkfs(1M), vfstab(4)










































                           Copyright 1994 Novell, Inc.               Page 3