void RunShellLoop(struct prompt *pr)
{
   Bool stillGoing = TRUE;
   Bool execvp_worked = FALSE; 
   ssize_t readReturn = 0;
   char *input = NULL;
   char *lastCommand = NULL;
   char **Inputs = NULL;
   char *old_command = NULL;
   char command_search;
   size_t bufLen = 0;
   int rows = 0;
   int old_col = 0;
   int col = 0;
   int x = 0;
   int i = 0;
   int len_old_command = 0;
   int num_of_inputs = 0;

   while(stillGoing)
   {
      /* The buffer will contain the new line character and the null char */
      readReturn = getline(&input, &bufLen, stdin);
      
      /* Get rid of any new line that may be there. */
      for(x = 0; x < strlen(input) + 1; ++x)
      {
         if(input[x] == '\n')
         {
            input[x] = '\0';
         }
      }

      
      if(readReturn == -1)
      {
         stillGoing = FALSE;
         printf("\n");
      }
      else if(strncmp(input, "exit", 4) == 0)
      {
         stillGoing = FALSE;
         break;
      }
      else if(execute_command(input) != TRUE)
      {
         addNode(input);
         if(readReturn == 3 && strncmp(input, "!!", 2) == 0)
         {
            printf("You typed: %s\n", lastCommand);
         }
         else if(strncmp(input, "!", 1) == 0)
         {
	    for(cptr=tptr; cptr != NULL; cptr=cptr->next)
	    {
	        if(cptr->x[0] == input[1])
	        {
	           printf("You typed: %s\n", cptr->x);
                   break;
                }
            }
            PrintPrompt(pr);
         }
   
	 else 
         {
            /*lastCommand = realloc(lastCommand, strlen(input) + 1);
	     strncpy(lastCommand, input, strlen(input) + 1);*/
            for(cptr=tptr; cptr != NULL; cptr=cptr->next)
	    {
	       if(cptr->next == NULL)
	       {
                  printf("You typed: %s\n", cptr->x);
               }
            }
            PrintPrompt(pr);          
         }
      }
      else
	PrintPrompt(pr);

      input = NULL;
   }
   
   for(cptr = tptr; cptr != NULL; cptr = cptr->next)
   {
     printf("%s\n", cptr->x);
     }
 
   for(cptr = tptr; cptr != NULL; )
   {
      struct node *tempptr;
      tempptr = cptr->next;
      free(cptr); 
      cptr = tempptr;
   }     

   free(input);
   free(lastCommand);
   
}

void addNode(char *input)
{
   struct node *nptr;
   cptr = tptr;

   if ((nptr = malloc(sizeof(struct node))) != NULL)
   {
      nptr->x = input;
      nptr->next = NULL;

      if(tptr == NULL)
      {
         tptr = nptr;
      }
      else
      {
         while(cptr->next != NULL)
         {
            cptr = cptr->next;
         }
         /*cptr->next = malloc(sizeof(struct node));*/
         cptr->next = nptr;
      }
   }
   else
   {
      fprintf(stderr, "%s", "Not enough memory.\n");
      exit(EXIT_FAILURE);
   }
}

PC-lint for C/C++ (NT) Ver. 8.00e, Copyright Gimpel Software 1985-2001

--- Module:   test.c 
test.c 7 error [Warning 565] tag 'node' not previously seen, assumed file-level scope
test.c 8 error [Error 40] Undeclared identifier 'cptr'
test.c 8 error [Error 40] Undeclared identifier 'tptr'
test.c 8 error [Error 63] Expected an lvalue
test.c 10 error [Error 84] sizeof object is zero or object is undefined
test.c 10 error [Info 774] Boolean within 'if' always evaluates to False [Reference: file test.c: line 10]
test.c 10 error [Info 831] Reference cited in prior message
test.c 12 error [Error 115] struct/union not defined
test.c 12 error [Error 40] Undeclared identifier 'x'
test.c 12 error [Error 63] Expected an lvalue
test.c 13 error [Error 115] struct/union not defined
test.c 13 error [Error 40] Undeclared identifier 'next'
test.c 13 error [Error 63] Expected an lvalue
test.c 15 error [Error 40] Undeclared identifier 'tptr'
test.c 17 error [Error 40] Undeclared identifier 'tptr'
test.c 17 error [Error 63] Expected an lvalue
test.c 21 error [Error 40] Undeclared identifier 'cptr'
test.c 21 error [Error 10] Expecting a structure or union
test.c 21 error [Error 40] Undeclared identifier 'next'
test.c 23 error [Error 40] Undeclared identifier 'cptr'
test.c 23 error [Error 40] Undeclared identifier 'cptr'
test.c 23 error [Error 10] Expecting a structure or union
test.c 23 error [Error 40] Undeclared identifier 'next'
test.c 23 error [Error 63] Expected an lvalue
test.c 26 error [Error 40] Undeclared identifier 'cptr'
test.c 26 error [Error 10] Expecting a structure or union
test.c 26 error [Error 40] Undeclared identifier 'next'
test.c 26 error [Error 63] Expected an lvalue
test.c 38 error [Error 40] Undeclared identifier 'Bool'
test.c 38 error [Warning 522] Expected void type, assignment, increment or decrement
test.c 38 error [Error 10] Expecting ';'
test.c 39 error [Error 40] Undeclared identifier 'Bool'
test.c 39 error [Warning 522] Expected void type, assignment, increment or decrement
test.c 39 error [Error 10] Expecting ';'
test.c 40 error [Error 40] Undeclared identifier 'ssize_t'
test.c 40 error [Warning 522] Expected void type, assignment, increment or decrement
test.c 40 error [Error 10] Expecting ';'
test.c 41 error [Error 42] Expected a statement
test.c 42 error [Error 42] Expected a statement
test.c 43 error [Error 42] Expected a statement
test.c 44 error [Error 42] Expected a statement
test.c 45 error [Error 42] Expected a statement
test.c 46 error [Error 78] Symbol 'size_t' typedef'ed at line 53, file c:\progra~1\borland\bcc55\include\_stddef.h used in expression
c:\progra~1\borland\bcc55\include\_stddef.h 53 error [Info 830] Location cited in prior message
test.c 46 error [Warning 522] Expected void type, assignment, increment or decrement
test.c 46 error [Error 10] Expecting ';'
test.c 47 error [Error 42] Expected a statement
test.c 48 error [Error 42] Expected a statement
test.c 49 error [Error 42] Expected a statement
test.c 50 error [Error 42] Expected a statement
test.c 51 error [Error 42] Expected a statement
test.c 52 error [Error 42] Expected a statement
test.c 53 error [Error 42] Expected a statement
test.c 55 error [Error 40] Undeclared identifier 'stillGoing'
test.c 58 error [Error 40] Undeclared identifier 'readReturn'
test.c 58 error [Info 718] Symbol 'getline' undeclared, assumed to return int
test.c 58 error [Info 746] call to function 'getline()' not made in the presence of a prototype
test.c 58 error [Error 40] Undeclared identifier 'input'
test.c 58 error [Error 40] Undeclared identifier 'bufLen'
test.c 58 error [Error 63] Expected an lvalue
test.c 61 error [Error 40] Undeclared identifier 'x'
test.c 61 error [Error 63] Expected an lvalue
test.c 61 error [Error 40] Undeclared identifier 'x'
test.c 61 error [Error 40] Undeclared identifier 'input'
test.c 61 error [Warning 574] Signed-unsigned mix with relational
test.c 61 error [Info 737] Loss of sign in promotion from int to unsigned int
test.c 61 error [Error 40] Undeclared identifier 'x'
test.c 61 error [Error 52] Expected an lvalue
test.c 63 error [Error 40] Undeclared identifier 'input'
test.c 63 error [Warning 409] Expecting a pointer or array
test.c 63 error [Error 40] Undeclared identifier 'x'
test.c 65 error [Error 40] Undeclared identifier 'input'
test.c 65 error [Warning 409] Expecting a pointer or array
test.c 65 error [Error 40] Undeclared identifier 'x'
test.c 65 error [Error 63] Expected an lvalue
test.c 70 error [Error 40] Undeclared identifier 'readReturn'
test.c 72 error [Error 40] Undeclared identifier 'stillGoing'
test.c 72 error [Error 40] Undeclared identifier 'FALSE'
test.c 72 error [Error 63] Expected an lvalue
test.c 75 error [Error 40] Undeclared identifier 'input'
test.c 77 error [Error 40] Undeclared identifier 'stillGoing'
test.c 77 error [Error 40] Undeclared identifier 'FALSE'
test.c 77 error [Error 63] Expected an lvalue
test.c 80 error [Info 718] Symbol 'execute_command' undeclared, assumed to return int
test.c 80 error [Info 746] call to function 'execute_command()' not made in the presence of a prototype
test.c 80 error [Error 40] Undeclared identifier 'input'
test.c 80 error [Error 40] Undeclared identifier 'TRUE'
test.c 82 error [Error 40] Undeclared identifier 'input'
test.c 83 error [Error 40] Undeclared identifier 'readReturn'
test.c 83 error [Error 40] Undeclared identifier 'input'
test.c 85 error [Error 40] Undeclared identifier 'lastCommand'
test.c 85 error [Warning 560] argument no. 2 should be a pointer
test.c 87 error [Error 40] Undeclared identifier 'input'
test.c 89 error [Error 40] Undeclared identifier 'cptr'
test.c 89 error [Error 40] Undeclared identifier 'tptr'
test.c 89 error [Error 63] Expected an lvalue
test.c 89 error [Error 40] Undeclared identifier 'cptr'
test.c 89 error [Error 40] Undeclared identifier 'cptr'
test.c 89 error [Error 40] Undeclared identifier 'cptr'
test.c 89 error [Error 10] Expecting a structure or union
test.c 89 error [Error 40] Undeclared identifier 'next'
test.c 89 error [Error 63] Expected an lvalue
test.c 91 error [Error 40] Undeclared identifier 'cptr'
test.c 91 error [Error 10] Expecting a structure or union
test.c 91 error [Error 40] Undeclared identifier 'x'
test.c 91 error [Warning 409] Expecting a pointer or array
test.c 91 error [Error 40] Undeclared identifier 'input'
test.c 91 error [Warning 409] Expecting a pointer or array
test.c 93 error [Error 40] Undeclared identifier 'cptr'
test.c 93 error [Error 10] Expecting a structure or union
test.c 93 error [Error 40] Undeclared identifier 'x'
test.c 93 error [Warning 560] argument no. 2 should be a pointer
test.c 97 error [Info 718] Symbol 'PrintPrompt' undeclared, assumed to return int
test.c 97 error [Info 746] call to function 'PrintPrompt()' not made in the presence of a prototype
test.c 104 error [Error 40] Undeclared identifier 'cptr'
test.c 104 error [Error 40] Undeclared identifier 'tptr'
test.c 104 error [Error 63] Expected an lvalue
test.c 104 error [Error 40] Undeclared identifier 'cptr'
test.c 104 error [Error 40] Undeclared identifier 'cptr'
test.c 104 error [Error 40] Undeclared identifier 'cptr'
test.c 104 error [Error 10] Expecting a structure or union
test.c 104 error [Error 40] Undeclared identifier 'next'
test.c 104 error [Error 63] Expected an lvalue
test.c 106 error [Error 40] Undeclared identifier 'cptr'
test.c 106 error [Error 10] Expecting a structure or union
test.c 106 error [Error 40] Undeclared identifier 'next'
test.c 108 error [Error 40] Undeclared identifier 'cptr'
test.c 108 error [Error 10] Expecting a structure or union
test.c 108 error [Error 40] Undeclared identifier 'x'
test.c 108 error [Warning 560] argument no. 2 should be a pointer
test.c 117 error [Error 40] Undeclared identifier 'input'
test.c 117 error [Error 63] Expected an lvalue
test.c 120 error [Error 40] Undeclared identifier 'cptr'
test.c 120 error [Error 40] Undeclared identifier 'tptr'
test.c 120 error [Error 63] Expected an lvalue
test.c 120 error [Error 40] Undeclared identifier 'cptr'
test.c 120 error [Error 40] Undeclared identifier 'cptr'
test.c 120 error [Error 40] Undeclared identifier 'cptr'
test.c 120 error [Error 10] Expecting a structure or union
test.c 120 error [Error 40] Undeclared identifier 'next'
test.c 120 error [Error 63] Expected an lvalue
test.c 122 error [Error 40] Undeclared identifier 'cptr'
test.c 122 error [Error 10] Expecting a structure or union
test.c 122 error [Error 40] Undeclared identifier 'x'
test.c 122 error [Warning 560] argument no. 2 should be a pointer
test.c 125 error [Error 40] Undeclared identifier 'cptr'
test.c 125 error [Error 40] Undeclared identifier 'tptr'
test.c 125 error [Error 63] Expected an lvalue
test.c 125 error [Error 40] Undeclared identifier 'cptr'
test.c 128 error [Error 40] Undeclared identifier 'cptr'
test.c 128 error [Error 10] Expecting a structure or union
test.c 128 error [Error 40] Undeclared identifier 'next'
test.c 129 error [Error 40] Undeclared identifier 'cptr'
test.c 130 error [Error 40] Undeclared identifier 'cptr'
test.c 130 error [Error 63] Expected an lvalue
test.c 133 error [Error 40] Undeclared identifier 'input'
test.c 134 error [Error 40] Undeclared identifier 'lastCommand'

--- Global Wrap-up

test.c 80 error [Warning 526] 'execute_command()' (line 80, file test.c) not defined
test.c 80 error [Warning 628] no argument information provided for function 'execute_command()' (line 80, file test.c)
test.c 36 error [Info 714] Symbol 'RunShellLoop(struct prompt *)' (line 36, file test.c) not referenced
test.c 97 error [Warning 526] 'PrintPrompt()' (line 97, file test.c) not defined
test.c 97 error [Warning 628] no argument information provided for function 'PrintPrompt()' (line 97, file test.c)
test.c 58 error [Warning 526] 'getline()' (line 58, file test.c) not defined
test.c 58 error [Warning 628] no argument information provided for function 'getline()' (line 58, file test.c)
Outputting to file test.lob