✔ 最佳答案
Can I use system call write()?
2009-03-28 03:44:50 補充：
2 versions:
Version #1:
#include <unistd.h>
#include <sys/types.h>
#include <errno.h>
#include <sys/wait.h>
int main()
{
pid_t pid;
int return_v;
switch(pid=fork()) {
case -1:
perror("fork");
exit(1);
case 0:
execl("/bin/sh", "sh", "-c","echo \"I'm child\"", NULL);
exit(return_v);
default:
execl("/bin/sh", "sh", "-c","echo \"I'm parent\"", NULL);
exit(return_v);
wait(&return_v);
}
}
Version #2:
2009-03-31 22:30:11 補充：
Can you send me an e-mail? I have exceeded my 300 words limit.
2009-03-31 22:52:00 補充：
See if you can get this:
For the output, you can change the execl lines to:
execl("/bin/sh", "sh", "-c","echo \"child process: I'm child\"", NULL);
execl("/bin/sh", "sh", "-c","echo \"parent process:I'm parent\"", NULL);
2009-03-31 22:53:37 補充：
For V2:
Change the execl lines to:
write(0,"child process: I'm child\n",26);
2009-03-31 22:53:56 補充：
write(0,"parent process: I'm parent\n",28);
