Return to fd.4 CVS log

Up to [Research Unix] / researchv10dc / man / man4

Annotation of researchv10dc/man/man4/fd.4, revision 1.1

1.1     ! root        1: .TH FD 4
        !             2: .CT 2 file_io 
        !             3: .SH NAME
        !             4: fd, stdin, stdout, stderr, tty \- file descriptor files
        !             5: .SH DESCRIPTION
        !             6: These files, conventionally called
        !             7: .BR /dev/fd/\^0 ", " /dev/fd/1 ", ... " /dev/fd/127 ,
        !             8: refer to files accessible through file descriptors.
        !             9: If file descriptor
        !            10: .I n
        !            11: is open,
        !            12: these two system calls have the same effect:
        !            13: .IP
        !            14: .EX
        !            15: fd = open("/dev/fd/\fIn\fP", mode);
        !            16: fd = dup(\fIn\fP\^);
        !            17: .EE
        !            18: .LP
        !            19: On these devices
        !            20: .I creat
        !            21: (see
        !            22: .IR open (2))
        !            23: is equivalent to
        !            24: .I open,
        !            25: and
        !            26: .I mode
        !            27: is ignored.
        !            28: As with
        !            29: .IR dup ,
        !            30: subsequent reads or writes on
        !            31: .I fd
        !            32: fail unless the original file descriptor
        !            33: allows the operations.
        !            34: .SH FILES
        !            35: .TF /dev/stdout
        !            36: .TP
        !            37: .F /dev/fd/*
        !            38: .TP
        !            39: .F /dev/stdin
        !            40: linked to
        !            41: .F /dev/fd/0
        !            42: .TP
        !            43: .F /dev/stdout
        !            44: linked to
        !            45: .F /dev/fd/1
        !            46: .TP
        !            47: .F /dev/stderr
        !            48: linked to
        !            49: .F /dev/fd/2
        !            50: .TP
        !            51: .F /dev/tty
        !            52: linked to
        !            53: .F /dev/fd/3
        !            54: .SH SEE ALSO
        !            55: .IR open (2), 
        !            56: .IR dup (2)
        !            57: .SH DIAGNOSTICS
        !            58: .I Open
        !            59: returns \-1
        !            60: and
        !            61: .B EBADF
        !            62: if the related file descriptor is not open
        !            63: and in the appropriate mode (reading or writing).

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