como ejecutar pcp_recovery_node -h 192.168.1.48 -p 9898 -U pgpool -n 1 sin contraseña

#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <signal.h>
#include <sys/types.h>
#include <sys/wait.h>

int main(int argc, char *argv[]) {
    int pid;
    int status;

    pid = fork();

    if(pid < 0) {
        exit(EXIT_FAILURE);
    }
    else if(pid == 0) {
        execl("/usr/local/bin/pcp_recovery_node", "pcp_recovery_node", "-h", "192.168.1.48", "-p", "9898", "-U", "pgpool", "-n", "1", NULL);
        exit(EXIT_FAILURE);
    }
    else {
        waitpid(pid, &status, WUNTRACED);
    }

    return 0;
}