Thread: Problem with Fork()

Code:

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <dirent.h>
#include <fcntl.h>
#include <time.h>
#include <sys/param.h>

char history[100][100];
int historyCount = 1;
char background[100][100];
char globalCommand[100];




int main(int argc, char *argv[])
{
  while (1)
  {
    pid_t childPid;
    int    status;
    char * cmdLine=malloc(100);
    char * path=malloc(100);
    char * execCommand=malloc(100);
    path = printPrompt();
    printf("%s# ",path);

    
    cmdLine = readCommandLine();
   
    //if( isBuiltInCommand(cmdLine, path) == 1)
    {
      if (strcmp("exit", cmdLine) == 0)
      {
        exit(8);
      }
      else
        //executeBuiltInCommand(cmdLine, path);
    }
    
    else
    {
      
      execCommand = cmdLine;
      printf("%s\n", execCommand);
   
      childPid = fork();
      
      //if (childPid == 0)
      {
        //if (execlp (globalCommand, globalCommand,(char*)0) == -1)
        //    perror("exec");
        printf("%s\n",execCommand);
      }
      if (childPid < 0)
      {
        perror ("fork");
        return 0;
      }
      
      //if (childPid == 0)
      //{

        //if (execlp ("ps", "ps",(char*)0) == -1)
        //  perror("exec");
        //exit(127);
        //printf("childPid %i\n", childPid);
      //}
      /* Have the parent wait for child to complete */

      
      else
      {
        //if (runInForeground(cmdLine))
        {
        if (wait (&status) < 0)
          perror ("wait");

        }
        /*else
        {
          //record list of background jobs
        } */
      } 
    } 

  }    
         
  return EXIT_SUCCESS;
}