Linha de comando

/* Este exemplo usa o comando popen que permite correr comandos de terminal. Neste caso, lista a directoria (ls -l) */
// Apple Xcode


#include <stdio.h>
#include <stdlib.h>

#define PATH_MAX 500

int main (int argc, const char * argv[])
{
    // linha de comandos
    FILE *the_file;
    int the_status;
    char the_path[PATH_MAX];

    // initiate pipe streams to or from a process
    the_file = popen("ls -l", "r");

    if (the_file == NULL)
    {
        printf("erro no comando");
    }

    // output
    while (fgets(the_path, PATH_MAX, the_file) != NULL)
    {
        printf("%s", the_path);
    }

    // status
    the_status = pclose(the_file);
    if (the_status == -1)
    {
        // error reported by pclose()
        printf("close");
    }
    else
    {
        /* Use macros described under wait() to inspect `status' in order
        to determine success/failure of command executed by popen() */
        printf("%i\n", the_status);
    }

    return 0;
}