fooapp - C source

fooapp.c

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

int
main(int argc, char *argv)
{
	printf("let's try to run execve!\n");

	execve("/bin/sh", 0, 0);

	/* if we are here, it means execve failed in some way */
	perror("couldn't execve: ");
}

/*

$ fooapp
let's try to run execve!
couldn't execve: : Permission denied

*/