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Help: how to call fork() in shell script? New to linux
Post 302699007 by frans on Tuesday 11th of September 2012 01:54:16 AM
09-11-2012
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fork();
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hi,
i tried the following source codes:
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hi all,
i tried the following source codes:
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main()
{
printf("demo of fork\n");
fork();
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}
output:
demo of fork
hello hello
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#include<sys/stat.h>
#include<sys/types.h>
main()
{
int flag;
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Hi, I'm writing a shell script where I want to call fork(). However I wrote like this "var=fork()" in c style and got this error:
"syntax error near unexpected token `(' "
How could I call fork() in shell script? Thanks in advance.
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LEARN ABOUT OSX
pthread_atfork
PTHREAD_ATFORK(3) BSD Library Functions Manual PTHREAD_ATFORK(3) NAME
pthread_atfork -- register handlers to be called before and after fork() SYNOPSIS
#include <pthread.h> int pthread_atfork(void (*prepare)(void), void (*parent)(void), void (*child)(void)); DESCRIPTION
The pthread_atfork() function is used to register functions to be called before and after fork(). The prepare handler is called before fork(), while the parent and child handlers are called after fork() in the parent and child process respectively. The prepare handlers are called in reverse order of their registration, while parent and child handlers are called in the order in which they were registered. Any of the handlers may be NULL. Important: only async-signal-safe functions are allowed on the child side of fork(). See sigaction(2) for details. RETURN VALUES
If successful, the pthread_atfork() function will return zero; otherwise an error number will be returned to indicate the error. ERRORS
pthread_atfork() will fail if: [ENOMEM] The system lacked the necessary resources to add another handler to the list. SEE ALSO
fork(2) STANDARDS
pthread_atfork() conforms to ISO/IEC 9945-1:1996 (``POSIX.1''). BSD
August 12, 2004 BSD