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


void populateArray(char* line, char** cmd){
  printf("INPUT LINE: %s\n", line);
  char *token    = strtok (line, " ");
  int n_spaces = 0, i;

  /* split string and append tokens to 'cmd' */
  while (token) {
    cmd = realloc (cmd, sizeof (char*) * ++n_spaces);

    if (cmd == NULL)
      exit (-1); //memory allocation failed

    cmd[n_spaces-1] = token;

    token = strtok (NULL, " ");
  }

  /* realloc one extra element for the last NULL */

    cmd = realloc (cmd, sizeof (char*) * (n_spaces+1));
    cmd[n_spaces] = 0;

  /* print the cmd */

    for (i = 0; i < (n_spaces+1); ++i)
      printf ("cmd[%d] = %s\n", i, cmd[i]);

  /* free the memory allocated */

  //free (cmd);
}

int main (int argc, char* argv[])
{
  //char *cmd1[64];
  //  char *cmd2[64];

  // char *line = "ls -l -a";          // this won't work
  // char * line = strdup("ls -l -a");  // this WORKS
  char line[] = "ls -l -a";            // this WORKS, too

  char **cmd3 = (char**)malloc(sizeof(char*));
  cmd3[0] = (char*)malloc(sizeof(char) * 64);

  //populateArray(line, cmd1);
  populateArray(line, cmd3);

  return 1;
}