Return to dup.2 CVS log

Up to [Research Unix] / researchv10dc / dist / man / v3 / man2

Annotation of researchv10dc/dist/man/v3/man2/dup.2, revision 1.1

1.1     ! root        1: .pa 1
        !             2: .he 'DUP (II)'1/15/73'DUP (II)'
        !             3: .ti 0
        !             4: NAME           dup -- duplicate an open file descriptor
        !             5: .sp
        !             6: .ti 0
        !             7: SYNOPSIS       (file descriptor in r0)
        !             8: .br
        !             9: sys dup        / dup = 41.; not in assembler
        !            10: .br
        !            11: (file descriptor in r0)
        !            12: .sp
        !            13: .ti 0
        !            14: DESCRIPTION    Given
        !            15: a file descriptor returned from
        !            16: an open or creat call,
        !            17: dup___
        !            18: will allocate another file descriptor
        !            19: synonymous
        !            20: with
        !            21: the original.
        !            22: The new file descriptor is returned in r0.
        !            23: .sp
        !            24: Dup___
        !            25: is used more to manipulate the value
        !            26: of file descriptors
        !            27: than to genuinely
        !            28: duplicate a file descriptor.
        !            29: Since the algorithm to allocate
        !            30: file descriptors
        !            31: is known to use the
        !            32: lowest available
        !            33: value between 0 and 9,
        !            34: combinations of dup___
        !            35: and close_____ can be
        !            36: used to
        !            37: manipulate file descriptors
        !            38: in a general way.
        !            39: This is handy for
        !            40: manipulating standard input and/or
        !            41: standard output.
        !            42: .sp
        !            43: .ti 0
        !            44: SEE ALSO       creat(II), open(II), close(II)
        !            45: .sp
        !            46: .ti 0
        !            47: DIAGNOSTICS    The
        !            48: error bit (c-bit)
        !            49: is set if:
        !            50: the given file descriptor is invalid;
        !            51: there are already 10 open files.
        !            52: .sp
        !            53: .ti 0
        !            54: BUGS           --

This archive runs on limited infrastructure. Preserving old code on modern bandwidth. Automated agents are requested to crawl responsibly.