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Annotation of researchv10dc/man/adm/man2/dup.2, revision 1.1

1.1     ! root        1: .TH DUP 2
        !             2: .CT 2 file_io
        !             3: .SH NAME
        !             4: dup, dup2 \(mi duplicate an open file descriptor
        !             5: .SH SYNOPSIS
        !             6: .nf
        !             7: .B int dup(fildes)
        !             8: .B int fildes;
        !             9: .PP
        !            10: .B int dup2(fildes, fildes2)
        !            11: .B int fildes, fildes2;
        !            12: .fi
        !            13: .SH DESCRIPTION
        !            14: Given
        !            15: a file descriptor
        !            16: .I dup
        !            17: allocates another file descriptor
        !            18: synonymous
        !            19: with
        !            20: the original.
        !            21: The new file descriptor is returned.
        !            22: .PP
        !            23: In
        !            24: .IR dup2 ,
        !            25: .I fildes
        !            26: is a file descriptor referring to an open file, and
        !            27: .I fildes2
        !            28: is an integer in the range of legal file descriptors.
        !            29: .I Dup2
        !            30: causes
        !            31: .I fildes2
        !            32: to refer to the same file
        !            33: and returns 
        !            34: .I fildes2.
        !            35: If
        !            36: .I fildes2
        !            37: already referred to another open file, it is closed first.
        !            38: .SH "SEE ALSO"
        !            39: .IR open (2), 
        !            40: .IR pipe (2), 
        !            41: .IR fd (4)
        !            42: .SH DIAGNOSTICS
        !            43: .BR EBADF ,
        !            44: .BR EMFILE
        !            45: .SH BUGS
        !            46: .I Dup
        !            47: of a file descriptor greater than 63
        !            48: turns into a
        !            49: .I dup2
        !            50: with a random second argument.

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