clri(1m)                   DG/UX 4.30                    clri(1m)



     NAME
          clri - clear inode

     SYNOPSIS
          /etc/clri filesys | special i-number ...

     DESCRIPTION
          Clri writes zeros on the bytes occupied by the inode
          numbered i-number.  The inode becomes allocatable.  Filesys
          is the pathname of the directory with which the file system
          is associated in the file /etc/fstab.  Special is the
          pathname of a special file referring to a device containing
          a file system.  The file system must be unmounted.

          After clri is executed, any blocks in the affected file will
          show up as unallocated in an fsck(1M) of the file system.
          Use clri very carefully and only in emergencies, since it
          can introduce inconsistencies into the file system.

          Read and write permission is required on the specified
          file-system device.  The inode becomes allocatable.

          The primary purpose of this routine is to remove a file that
          doesn't appear in any directory.  If you use it to clear an
          inode that does appear in a directory, you should also
          remove the directory entry.  Otherwise, when the inode is
          reallocated to a new file, the old entry will still point to
          that file.  If you remove the old entry then, the new file
          will be destroyed.  Since the new entry will again point to
          an unallocated inode, the whole cycle is likely to be
          repeated.

          NOTE:
               Fsck automatically removes files that don't appear in
               any directory.  Whenever possible, use fsck instead of
               clri.

     SEE ALSO
          fsck(1M), fsdb(1M), ncheck(1M), fs(4).

     BUGS
          Clri cannot be run on the root file system because that file
          system cannot be unmounted.












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