1FORK(3F)                                                              FORK(3F)
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NAME

6       fork - create a copy of this process
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SYNOPSIS

9       integer function fork()
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DESCRIPTION

12       Fork  creates  a  copy  of  the  calling process.  The only distinction
13       between the 2 processes is that the  value  returned  to  one  of  them
14       (referred  to  as  the  `parent' process) will be the process id of the
15       copy.  The copy is usually referred to as  the  `child'  process.   The
16       value returned to the `child' process will be zero.
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18       All logical units open for writing are flushed before the fork to avoid
19       duplication of the contents of I/O buffers in the external file(s).
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21       If the returned value is negative, it indicates an error  and  will  be
22       the negation of the system error code.  See perror(3F).
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24       A  corresponding exec routine has not been provided because there is no
25       satisfactory way to retain open logical units across  the  exec.   How‐
26       ever,  the  usual  function  of  fork/exec  can be performed using sys‐
27       tem(3F).
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FILES

30       /usr/lib/libU77.a
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SEE ALSO

33       fork(2), wait(3F), kill(3F), system(3F), perror(3F)
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374.2 Berkeley Distribution        May 27, 1986                         FORK(3F)