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Annotation of researchv10dc/man/adm/man1/sum.1, revision 1.1

1.1     ! root        1: .TH SUM 1
        !             2: .CT 1 files
        !             3: .SH NAME
        !             4: sum, treesum \- sum and count blocks in a file
        !             5: .SH SYNOPSIS
        !             6: .B sum
        !             7: [
        !             8: .B -5ri
        !             9: ]
        !            10: [
        !            11: .I file ...
        !            12: ]
        !            13: .PP
        !            14: .B treesum
        !            15: [
        !            16: .I file ...
        !            17: ]
        !            18: .SH DESCRIPTION
        !            19: By default,
        !            20: .I sum
        !            21: calculates and prints a 32-bit checksum,
        !            22: a byte count
        !            23: and the name of
        !            24: each
        !            25: .IR file .
        !            26: The checksum is also a function of the input length.
        !            27: If no files are given,
        !            28: the standard input is
        !            29: summed.
        !            30: Other summing algorithms are available.
        !            31: The options are
        !            32: .TP
        !            33: .B -i
        !            34: Read file names from standard input.
        !            35: .TP
        !            36: .B -r
        !            37: Sum with the algorithm of System V's
        !            38: .B "sum -r"
        !            39: and print the length (in 1K blocks) of the input.
        !            40: .TP
        !            41: .B -5
        !            42: Sum with System V's default algorithm
        !            43: and print the length (in 512-byte blocks) of the input.
        !            44: .PP
        !            45: .I Sum
        !            46: is typically used to look for bad spots,
        !            47: to validate a file communicated over
        !            48: some transmission line or
        !            49: as a quick way to determine if two files might be the same.
        !            50: .PP
        !            51: .I Treesum
        !            52: is similar to
        !            53: .BR "sum -r" ,
        !            54: except that if
        !            55: .I file
        !            56: is a directory, then
        !            57: .I treesum
        !            58: recursively descends it, summing all non-directories encountered.
        !            59: If no files are given,
        !            60: .IR treesum
        !            61: recursively sums the current directory.
        !            62: .SH "SEE ALSO"
        !            63: .IR wc (1)

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