/*------------------------------------------------------------------*/
/* textexec.c                                                       */
/* Author: Bob Dondero                                              */
/* The exec and perror system calls.                                */
/*------------------------------------------------------------------*/

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

int main(int argc, char *argv[])
{
   char *ppcArgv[2];

   printf("testexec process (%d)\n", (int)getpid());

   ppcArgv[0] = "hello";
   ppcArgv[1] = NULL;
   execvp(ppcArgv[0], ppcArgv);
   perror(argv[0]);

   return EXIT_FAILURE;
}

/*------------------------------------------------------------------*/

/* Sample executions:

$ gcc -Wall -ansi -pedantic hello.c -o hello

$ gcc -Wall -ansi -pedantic testexec.c -o testexec

$ testexec
testexec process (14067)
hello process (14067)

$ mv hello nothello

$ testexec
testexec process (14308)
testexec: No such file or directory

$ mv nothello hello

$ testexec
testexec process (14340)
hello process (14340)

*/