/*-------------------------------------------------------------------*/
/* textexec.c                                                        */
/* The exec and perror system calls.                                 */
/*-------------------------------------------------------------------*/

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

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

   printf("testexec process (%ld)\n", (long)getpid());

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

   return 1;
}

/* Sample executions:

$ gcc -Wall -ansi -pedantic -o hello hello.c
$ gcc -Wall -ansi -pedantic -o testexec testexec.c
$ testexec
testexec process (23674)
hello process (23674)
$ mv hello nothello
$ testexec
testexec process (23708)
testexec: No such file or directory
$ mv nothello hello
$ testexec
testexec process (23724)
hello process (23724)
$

*/