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Annotation of researchv10dc/dist/man/v4/man8/clri.8, revision 1.1

1.1     ! root        1: .th CLRI VIII 10/31/73
        !             2: .sh NAME
        !             3: clri \*- clear i-node
        !             4: .sh SYNOPSIS
        !             5: .bd clri
        !             6: i-number [ filesystem ]
        !             7: .sh DESCRIPTION
        !             8: .it Clri
        !             9: writes zeros on the 32 bytes occupied by the i-node
        !            10: numbered
        !            11: .it i-number.
        !            12: If the
        !            13: .it "file system"
        !            14: argument is given, the i-node resides on
        !            15: the given device, otherwise on a
        !            16: default file system.
        !            17: The file system argument
        !            18: must be a special file
        !            19: name referring to a device
        !            20: containing a file system.
        !            21: After
        !            22: .it clri,
        !            23: any blocks
        !            24: in the affected file
        !            25: will show up as ``missing'' in a
        !            26: .it check
        !            27: of
        !            28: of the file system.
        !            29: .s3
        !            30: Read and write permission is required on the specified
        !            31: file system device.
        !            32: The i-node becomes allocatable.
        !            33: .s3
        !            34: The primary purpose of this routine
        !            35: is to remove a file which
        !            36: for some reason appears in no
        !            37: directory.
        !            38: If it is used to zap an i-node
        !            39: which does appear in a directory, care should be taken to track down
        !            40: the entry and remove it.
        !            41: Otherwise, when the i-node is reallocated to some new file,
        !            42: the old entry will still point to that file.
        !            43: At that point removing the old entry will destroy the new file.
        !            44: The new entry will again point to an unallocated i-node,
        !            45: so the whole cycle is likely to be repeated again and again.
        !            46: .sh BUGS
        !            47: Whatever the default file system is,
        !            48: it is likely to be wrong.
        !            49: Specify the file system explicitly.
        !            50: .s3
        !            51: If the file is open,
        !            52: .it clri
        !            53: is likely to be ineffective.

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