$ cat << EOF > main.c
> #include <unistd.h>
>
> int main() {
>   write(0, "Hello, world\n", 13);
>   write(0, "I'm Chris Milan.\n", 17);
>   write(0, "Welcome to my webpage\n\n", 23);
>   write(0, "Press ENTER (or tap) to continue...", 26);
>   read(1, NULL, 1);
>   return 0;
> }
> EOF
$ cc main.c -o main && ./main
Hello, world
I'm Chris Milan
Welcome to my webpage

Press ENTER (or tap) to continue...