03-20-2001
Advantages of using a fork? You dont get spaghetti sauce on your hands....
Please read the <A HREF="http://www.rahul.net/cgi-bin/userbin/man?topic=fork§ion=2">fork(2)</A> man page. It should answer most of your questions.
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I run this code, actually I want to both processes print the message from "data". But only one does. What happens? Anyone can help?
#include <stdio.h>
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Hello all.
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hi all
About this code
for (i = 1; i < n; i++)
if ((childpid = fork()) <= 0)
break;
I really can't understand the output .
and the way fork () return the value .
how about the process Id ,the child process Id and the parent ID
in this case
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Hi everybody,
I wanna write a code to understand how fork works.
my target
--------------
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Hi,
I wrote a simple program for understanding the fork command. The code is as below
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}
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Hi,
I wrote a simple program for understanding the fork command. The code is as below
int main(void)
{
fork(); printf("hi 1 \n");
fork(); printf("hi 2 \n");
fork(); printf("hi 3 \n");
}
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FORK(3F) FORK(3F)
NAME
fork - create a copy of this process
SYNOPSIS
integer function fork()
DESCRIPTION
Fork creates a copy of the calling process. The only distinction between the 2 processes is that the value returned to one of them
(referred to as the `parent' process) will be the process id of the copy. The copy is usually referred to as the `child' process. The
value returned to the `child' process will be zero.
All logical units open for writing are flushed before the fork to avoid duplication of the contents of I/O buffers in the external file(s).
If the returned value is negative, it indicates an error and will be the negation of the system error code. See perror(3F).
A corresponding exec routine has not been provided because there is no satisfactory way to retain open logical units across the exec. How-
ever, the usual function of fork/exec can be performed using system(3F).
FILES
/usr/lib/libU77.a
SEE ALSO
fork(2), wait(3F), kill(3F), system(3F), perror(3F)
4.2 Berkeley Distribution May 27, 1986 FORK(3F)