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Lab4_ex1.c
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Lab4_ex1.c
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#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <fcntl.h>
#include <errno.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <sys/wait.h>
int main()
{
pid_t pid = fork();
if(pid < 0)
return errno;
if(pid == 0){
/* Child's instructions */
char *argv[] = {"ls", NULL};
int error = execve("/bin/ls", argv, NULL);
printf("Status exit : %d\n", error);
}
else{
/* Parent's instructions */
int returnStatus;
pid_t pidc = waitpid(pid, &returnStatus, 0); /* Parent's process waits here for his child to terminate the process */
printf("Parent: %d, Child: %d\n", getpid(), pidc);
/* Verify if the child process terminates withouut error */
if(returnStatus == 0)
printf("Child process terminated normally\n");
if(returnStatus == 1)
printf("Child process terminated with an error");
}
return 0;
}